Evaluating the Factors that are Affecting the Implementation of Industry 4 . 0 Technologies in Manufacturing MSMEs , the Case of Peru

The micro, small, and medium enterprises (MSMEs) sector plays a very crucial role in the economic and social development of Peru. Unfortunately, the tough access to the use of technologies is one of the weaknesses of this type of enterprises, which implies a low technological intensity production, according to the new technological trends. This study analyzes the factors that are affecting the implementation of Industry 4.0 technologies in Peruvian micro, small, and medium enterprises. According to the findings from the semi-structured interviews, it has identified four factors that respond to the main question of this research—lack of advanced technology, lack of financial investment, poor management vision, and lack of skilled workers. Data from 49 enterprises from the manufacturing sector were used for the assessment. The surveys conducted on business managers were evaluated using a multi-criterion decision-making method by the analytic hierarchy process. The findings of the study generate some recommendations that could be beneficial for the sectors involved with micro, small, and medium enterprises in Peru.


Introduction
Manufacturing is a production business and its primary objective is to convert raw material into quality goods that have a value in the market place and as a result, generated profit. Factors such as system efficiency, product quality and reliability, productivity and lower cost, and efficient and effective management techniques contributing to increasing that profit [1].
The manufacturing industry is key to the country's development and economy. Since many years ago, this industry has been experiencing many changes to improve efficiency in order to produce products with higher quality and become more competitive in the market [1].
In the past few years, new emerging technologies such as cloud computing, cyber-physical systems [2], wireless sensor networks [3], big data [4], or mobile Internet have been introduced into the manufacturing environment [5]. The fusion of manufacturing with these new technologies is enabling a game-changing transformation in terms of manufacturing models and approaches [6], leading to a new concept called Industry 4.0.
The term "Industry 4.0" was first used in 2011 as part of the German government initiative establishing it as a critical strategy for industrial production [7]. Industry 4.0 is derived from the concept "Industrie 4.0" initiative started by the German government for ensuring the future competitiveness of the German manufacturing industry [7]. The concept describes the expectations of the government and the industry heading towards the fourth ndustrial revolution [7]. This revolution is intended to be supported via high-grade digitization as well as the interconnection of industrial value creation, leading to smart industrial value creation [29].
The new available technologies such as big data, collaborative robots, or augmented reality, among others, are released just to improve the enterprises value creation architecture, representing a bunch of opportunities [30], which involves increasing the efficiency and improving performance (reducing time, costs or failures, offering employee training, etc.). These opportunities could be the best way to capture the attention of traditional manufacturing companies to adopt Industry 4.0 technologies without addressing high risks [31].
The new industrial revolution offers different opportunities for the industry, including real-time data access, development of new skills, and achieving sustainable goals, among others.
The concept of real-time data between any process steps is another opportunity that Industry 4.0 offers to the enterprises, removing one of the most difficult challenges of prior support systems-the lack of up-to-date information [32].
Paravizo et al. [33] introduced three categories of skills needed in the era of Industry 4.0, and they are: (1) technical, which could involve the installation of IT devices, or operate automatic Ggided vehicles, just to cite some example; (2) transformational skill involves more the proposition and realization of changes; and (3) social, this one involves interaction between members, for example teamwork, knowledge transfer and acquisition, among other [34]. Industry 4.0 appear to be a new ally in achieving sustainable manufacturing, which is one of the key aspects to achieving sustainable development in the contemporary era, new industrial organization paradigms with an intrinsic focus on resource efficiency and increased "corporate social responsibility" [33]. Facilitated by Industry 4.0, the reduction of waste, energy and resource consumption, as well as improved working conditions, can be achieved [35]. Industry 4.0 introduces new chances that may disrupt the traditional manufacturing approach of planning, control [14], and management.

How Industry 4.0 Affects the SMEs Sector?
Moeuf et al. [14] present a study that addresses the recent switches to the production planning and control actions in SMEs related to Industry 4.0. The study exhibited that in the case of technologies, the least expensive and least revolutionary such us cloud computing or simulation are the most utilized in SMEs while those that represent profound business transformations such as big data [4] or cyber-physical systems [2] are not considered by SMEs.
Müller et al. [11] explains that it is indispensable for SMEs managers to understand the different ways for tackling Industry 4.0. The study shows diverse possibilities to innovate the business models of manufacturing SMEs according to the demand of Industry 4.0, encouraging managers to explore further scenarios for their business.
Ganzarain et al. [36] present a step-by-step process model to lead and train enterprises to identify new diversification opportunities within Industry 4.0. The study conducted on a representative sample of SMEs in the Basque Country found that just a few SMEs use any Industry 4.0 methodology, but they also present a real need for guided support in developing a company-specific Industry 4.0 vision and specific project planning.
Müller et al. [29] suggest the following strategies for SMEs in a way to achieve the implementation of Industry 4.0: adaptation programs especially oriented for SMEs, implement intelligent assistance systems for supporting employees designing workplace, and address the skills shortages.

Criterions to Consider in the Implementation of Industry 4.0 Technologies
Premkumar and Roberts [37] present a study that identifies three criterions that influence the embrace of new technologies in small enterprises located in rural areas: innovation, organization, and environment.
Innovation is an idea or practice recognized for new adopters [37]. It is also considered as a key element for entrepreneurial success [38]. The main motivation for enterprises to adopt new technologies is the expected benefits they would generate to the company. Nonetheless, before organizations assume the benefits they must first be conscious of their need for the innovation and how that can be applied to succeed the actual performance or exploit new opportunities [37].
Minterzberg (1972) defined the organizational structure as the framework of the relations on jobs, systems, operating process, people, and groups making efforts to achieve the goals. M. Mehrpour et al. [39] indicates that organizational structure can be influenced by strategy, environment, goals, organization size, and technology. These variables are key and content-based and indicate the entire organization and its position between the organizations. Also, they define an organizational structure in three principles. First, it identifies formal relations and report them, which will help to determine the number of levels in the hierarchy and it defines the span of the control of managers. Second, it identifies the position of people as working in a group in a unit and it divides the units in the entire organization. And the third one includes the design of systems by which all units are coordinated and effective relationships in the organization is guaranteed [39].
MSMEs need flexible organizational structures because the interconnection between businesses is growing very fast, and business areas that at the moment are separated without any relation will become interconnect with each other [40].
In terms of the environment aspect, the external environment plays an essential role in the embrace of new technologies [37]. In the macro environment, it could be distinguished by the following variables: social (social conflicts, transport, and communication), economic (incentives, national/regional investment climate) [30], industry competition (markets for technologies or technical support) and the political framework (regional plans and programs, legislative framework). It is constituted by the strategic areas of the environments, conditioning the objectives and the innovative strategies.
When considering industry competition, in order to increase competitive pressure on global markets, businesses need to approach customer-individual demands in the less time possible [41]. Especially MSMEs present a lack of developing strategies to perform new solutions. The heads of MSMEs must try to understand how new technologies can make their products smarter and which new business models might arise from that. There is a variety of possible business model features that can be offered to the customer, considering Industry 4.0 technologies as key. It is found that these benefits are foremost intended by manufacturing enterprises in contrast to service enterprises. Smart products can increase the proportion of value added from product sales to downstream services [40,42].
Government and private organizations can take action so that Industry 4.0 technologies can be adapted and implemented in the manufacturing and service industry [43]. The authorities should start to promote Industry 4.0 technologies, actions such as: making businesses familiar with the concept of emerging technologies, offering support for implementation (through national programs) and sensibilization about this topics, application-oriented research, or offering consultation services could help improve the relationship between MSMEs and Industry 4.0 [40].

Research Design and Empirical Setting
The case studies are suggested in exploratory research because they can provide very important data and allow the investigation of the different contemporaneous managerial challenges [44]. Due to the present research employs an exploratory research design, a multiple case study approach was found to be appropriate.
Based on research work on how emerging technologies are impacting SMEs [11,14], the present paper uses a multiple case study research design in order to identify the criterions that are affecting the implementation of Industry 4.0 in Peruvian MSMEs. Two targets were followed throughout the research: (1) to assess the Peruvian MSMEs current approach towards Industry 4.0 and (2) illustrate the scenario of criterions and factors affecting the implementation of Industry 4.0 in Peruvian MSMEs. On top of this, the research elaborates on future actions and implementation strategies.

Study Area and Data Collection
The nature of this study is qualitative [45], and that may raise issues concerning the generalizability of the results. To discard any concern, enterprises from Lima, the capital of Peru, were selected prior to the survey; around 2 months were spent to identify the potential enterprises that could support this research, factors such as company size and industry sector were critical for the selection of the companies. In total, 70 enterprises were identified and surveyed subsequently (with the questionnaire presented in Appendix A). Out of those, just 49 enterprises were considered suitable for the study. The managers from those 49 enterprises also provided their opinion to prepare the pairwise comparison of the alternatives and the criterions. Table 1 shows the breakdown. Respondent employment sizes range from 6 to 38 employees. Sixty-one percent were micro-enterprises with 6 to 10 employees, another 25% were small enterprises that had 10-20 employees, and the remaining 14% represented medium-size with more than 20 but less than or Processes 2019, 7, 161 6 of 24 equal to 38 employees, as shown in Figure 1. All of the respondents were single-establishment firms headquartered in Peru.
Step 1. Identification of the decision problem. The first step consists of clearly defining the problem to be solved and as a consequence defining the goal to achieve or expected to achieve after the method will be implemented.
Step 2. Construction of the hierarchical structure. This structure is defined with the goal (problem to be solved) at the top of the diagram, followed by the criterion or factors affecting the problem. In case the hierarchy has possible alternatives the levels of the structure can continue been defined, as is shown in Figure 2. This step is very important because structuring the problem in this way will make possible understand the final decision, the criterion to be analyzed and the alternatives to be evaluated [48].  Step 3. Calculation of the weight (priority) of each criterion. This step starts with the development of pairwise comparison matrices between the criterion and alternatives, with the main purpose of determining the importance weights by binary comparisons; the pairwise comparison involves one-on-one comparisons between each of the factors and derives the relative weight for the criterion [48].
The 9-points scale created by Saaty [49] (Table 2) is used to measure the relative weight of each criterion and is assigned for the pairwise comparison. After deriving the weights of each criterion it is necessary to review the consistency of judgments.

Method of Analysis
Some problems are very complicated and they cannot be measured or analyzed by a single criterion since there can hardly be found a feature integrating all essential properties. To solve these type of problems the multi-criterion quantitative evaluation methods are applied [46].
The analytic hierarchy process (AHP) method, proposed by Saaty [47], is a multi-criterion decision-making tool. This method involves structuring criterion into a hierarchical structure in order to assess a problem [47].
In the following lines, the solution process of the AHP method has been explained in 8 steps.
Step 1. Identification of the decision problem. The first step consists of clearly defining the problem to be solved and as a consequence defining the goal to achieve or expected to achieve after the method will be implemented.
Step 2. Construction of the hierarchical structure. This structure is defined with the goal (problem to be solved) at the top of the diagram, followed by the criterion or factors affecting the problem. In case the hierarchy has possible alternatives the levels of the structure can continue been defined, as is shown in Figure 2. This step is very important because structuring the problem in this way will make possible understand the final decision, the criterion to be analyzed and the alternatives to be evaluated [48].

Method of Analysis
Some problems are very complicated and they cannot be measured or analyzed by a single criterion since there can hardly be found a feature integrating all essential properties. To solve these type of problems the multi-criterion quantitative evaluation methods are applied [46].
The analytic hierarchy process (AHP) method, proposed by Saaty [47], is a multi-criterion decision-making tool. This method involves structuring criterion into a hierarchical structure in order to assess a problem [47].
In the following lines, the solution process of the AHP method has been explained in 8 steps.
Step 1. Identification of the decision problem. The first step consists of clearly defining the problem to be solved and as a consequence defining the goal to achieve or expected to achieve after the method will be implemented.
Step 2. Construction of the hierarchical structure. This structure is defined with the goal (problem to be solved) at the top of the diagram, followed by the criterion or factors affecting the problem. In case the hierarchy has possible alternatives the levels of the structure can continue been defined, as is shown in Figure 2. This step is very important because structuring the problem in this way will make possible understand the final decision, the criterion to be analyzed and the alternatives to be evaluated [48].  Step 3. Calculation of the weight (priority) of each criterion. This step starts with the development of pairwise comparison matrices between the criterion and alternatives, with the main purpose of determining the importance weights by binary comparisons; the pairwise comparison involves one-on-one comparisons between each of the factors and derives the relative weight for the criterion [48].
The 9-points scale created by Saaty [49] ( Table 2) is used to measure the relative weight of each criterion and is assigned for the pairwise comparison. After deriving the weights of each criterion it is necessary to review the consistency of judgments. Step 3. Calculation of the weight (priority) of each criterion. This step starts with the development of pairwise comparison matrices between the criterion and alternatives, with the main purpose of determining the importance weights by binary comparisons; the pairwise comparison involves one-on-one comparisons between each of the factors and derives the relative weight for the criterion [48]. The 9-points scale created by Saaty [49] (Table 2) is used to measure the relative weight of each criterion and is assigned for the pairwise comparison. After deriving the weights of each criterion it is necessary to review the consistency of judgments. Table 2. Scale for pairwise comparison, adopted from Saaty [49].

Scale
Description Consideration 1 Equal importance Two activities represent the same level of importance.
2 Slightly more important In case the judgment is between equal and slightly more important (the value is 2). 3 4 Moderately more important In case the judgment is between slight and moderate more important (the value is 4). 5 6 Considerably more important In case the judgment is between moderately and considerably more important (the value is 6). 7 8 Extremely more important In case the judgment is between considerably and extremely more important (the value is 8). 9 Cells in comparison matrices use a value from the numeric scale shown in Table 2, to show the relative preference in each of the compared pairs [43]. For example, if we consider that factor A is extremely more important than the factor B, the A-B comparison cell will contain the value 9, and this implies that B-A has the reciprocal value 1/9, as is presented in the following example (Table 3). Table 3. Example of how to complete the pairwise comparison matrix.
After the pairwise comparison matrix has been developed, the next step is the creation of normalized matrices. First, the sum of each column is calculated as shown the Table 4. Then, the normalized matrix is obtained by dividing each column value by the respective column sum, as shown in the example presented in Table 5. After obtained the normalized matrix; the priority of each criterion (weight vector, column W of Table 4) is obtained by simply calculating per each row the average value. Step 4. Evaluating the consistency ratios of the comparison matrices. First, we start, multiplying the pairwise matrix by the weight vector (C × W = WS) obtaining a new vector called weight sum (WS), as is shown in the Equation (1).
where n is the size of the caomparison matrix In a way to calculate the values of the WS vector, first we need to multiply each value in the column of the comparison matrix by each value of the weight vector, then the result of each multiplication has to be added and that will be the weight sum value, as is shown in Equation (2).
After this process has been completed, we need to divide each value of the weighted sum vector (WS) by the corresponding weight of each criterion, in a way to obtain λ vector, represented in Equation (3).
With λ vector calculated is easy to calculate λ max , which is the average of the values of λ vector, as shown in Equation (4): With the value of λ max calculated, the consistency index (CI) is obtained as follow: After calculating the CI value, the random index (RI) needs to be obtained. This value is tabulated for different matrix sizes [49]. The RI values for different matrix sizes are shown in Table 6. Finally, the "consistency ratio (CR)" is obtained, defined as: A CR of less than 0.1 indicates that the application is consistent. If this value is exceeded, the judgments should be reviewed again.
Step 5. Calculation of the weight (priority) of each alternative with respect to the criterion. This step is defined by deriving the relative priorities of the alternatives with respect to each criterion. For this purpose, a pairwise comparison of all the alternatives, with respect to each criterion, need to develop, and after that the consistency ratio needs to be calculated per matrix developed (following the step number 4, presented in the above lines) in a way to evaluate the accuracy of the matrix.
Step 6. Synthesis of the model. This step consists of aggregate the relative weights of the criterion and alternatives to produce a vector of composite weights for each alternative [48].
Step 7. Final decision. After obtaining the composite weight, the alternatives should be ranked in order to decide which one is more important.

Applications of the AHP Method
The AHP method can be applied to different kind of problems from different sectors and is considered one of the most useful methods where teams of people are working on complex problems that involve human perceptions and judgments, whose resolutions have long-term repercussions [50]. The method has obtained extensive results in problems involving priority identification, planning, resource assignment, or selection between multiple alternatives [50]. Decision makers can make concrete and abstract assessments on alternatives/criterion/sub-criterion. The application of this tool can be seen in the following sectors: Baffoe et al. [51] in the social sector, prioritizing livelihood activities to achieve sustainable rural development interventions; in the energy sector, Ghimire et al. [52] identifying the barriers to renewable energy development; Moraes [53] applied AHP in project portfolio management; and Liberatore and Nydick [54] in the medical and healthcare sector.

Results
Large-sized enterprises produce in high volumes; constant optimization is a standing factor of process management. In the case of medium, small, or micro enterprises the production is in low volume and as a consequence, the number of manual activities is in higher proportion. In comparison with SMEs, large companies will realize much higher efficiency gains from the use of Industry 4.0 technologies because of their level of production [40]. The integration of communication and information technology into production, create concepts like the smart product and smart machine and enterprises that include these concepts in the business performance have begun to activate their power in today's competitive environment [55]. In this study, we examined the difficulties that MSMEs are facing in the application of Industry 4.0 technologies and with the support of the AHP method the most relevant factor will be determined. The application of AHP for this research is described the following steps: Step 1. Identification of the decision problem. This research planned to identify the specific obstacle that is affecting Peruvian MSMEs in the implementation of Industry 4.0 technologies.
Step 2. Construction of the hierarchical structure. Although there is a presence of Industry 4.0 in Peruvian enterprises, its level of the establishment have not yet a very representative position; furthermore, it is considered that, in terms of digital transformation, only 1% of the massive consumption enterprises could be considered to belong to category 4.0 [56]. The criterions influencing are based in two sources-literature and authors perspective. In the case of literature, the study presented by Premkumar and Roberts [37] and Ali Sevinç et al. [55] was used to support the criterions. From the author's perspective, the criterion environment was divided into two-industry competition and government. As a consequence, in this study, industry innovation, organization, industry competition, and government were defined as the four criterions constituting the second level of the hierarchy by the criterions as is shown in Figure 3. The AHP method structures the problem as a hierarchy. After defining the goal to be achieved and the criterion to be used, the next step is to define the factors to be evaluated. The factors were based on Schröder's [40] study, related to the challenges of industry 4.0 for SMEs and the findings from the 26 semi-structured interviews conducted with MSMEs experts. Figure 4 present the hierarchy proposed for this study. The first level is the goal; in this case, what is the most important factor that affects the decision to implement Industry 4.0 technologies in Peruvian SMEs? The second level is constituted by the criterions, and in this case, are represented by organization, industry competition, and government support. The third level presents the available alternatives, which means the factors that will help to answer the initial goal. According to the findings from the semi-structured interviews conducted with relevant stakeholders, four factors, including lack of advanced technology, lack of financial investment, poor management vision, and skilled workers, were selected as key factors for the assessment. In Figure 5, the criterions and the factors involved are presented in a diagram by taking into account the answers obtained in the survey presented in Appendix A. The lack of advanced technology factor is the tough access to the use of technologies, which implies a low technological intensity production, according to the new technological trends. The experts have opined that the lack of technological device markets still create barriers for the Peruvian manufacturing business managers to think regarding industry 4.0.
In terms of the lack of financial investment, finance is a major restriction facing SMEs and it can have a remarkable impact on their performance [38]. Different costs are involved in the implementation of new technologies or systems that need to be integrated with the company for these processes cost such as the cost of maintenance and technical support to ensure the continuity of new technologies integrated into enterprises or the cost of training when the new technologies are integrated into the enterprises. The installation of new technologies to gain the benefits of Industry 4.0 are consider very expensive; therefore, the companies do not like to apply them in the factory sector, which is another challenge for the application of Industry 4.0 [43].
The poor management vision involves the support for new technologies and the adoption of innovations. With the support of top management, various studies can be done, and sufficient resources can be allocated for the adoption of new technologies. The AHP method structures the problem as a hierarchy. After defining the goal to be achieved and the criterion to be used, the next step is to define the factors to be evaluated. The factors were based on Schröder's [40] study, related to the challenges of industry 4.0 for SMEs and the findings from the 26 semi-structured interviews conducted with MSMEs experts. Figure 4 present the hierarchy proposed for this study. The first level is the goal; in this case, what is the most important factor that affects the decision to implement Industry 4.0 technologies in Peruvian SMEs? The second level is constituted by the criterions, and in this case, are represented by organization, industry competition, and government support. The third level presents the available alternatives, which means the factors that will help to answer the initial goal. According to the findings from the semi-structured interviews conducted with relevant stakeholders, four factors, including lack of advanced technology, lack of financial investment, poor management vision, and skilled workers, were selected as key factors for the assessment. The AHP method structures the problem as a hierarchy. After defining the goal to be achieved and the criterion to be used, the next step is to define the factors to be evaluated. The factors were based on Schröder's [40] study, related to the challenges of industry 4.0 for SMEs and the findings from the 26 semi-structured interviews conducted with MSMEs experts. Figure 4 present the hierarchy proposed for this study. The first level is the goal; in this case, what is the most important factor that affects the decision to implement Industry 4.0 technologies in Peruvian SMEs? The second level is constituted by the criterions, and in this case, are represented by organization, industry competition, and government support. The third level presents the available alternatives, which means the factors that will help to answer the initial goal. According to the findings from the semi-structured interviews conducted with relevant stakeholders, four factors, including lack of advanced technology, lack of financial investment, poor management vision, and skilled workers, were selected as key factors for the assessment. In Figure 5, the criterions and the factors involved are presented in a diagram by taking into account the answers obtained in the survey presented in Appendix A. The lack of advanced technology factor is the tough access to the use of technologies, which implies a low technological intensity production, according to the new technological trends. The experts have opined that the lack of technological device markets still create barriers for the Peruvian manufacturing business managers to think regarding industry 4.0.
In terms of the lack of financial investment, finance is a major restriction facing SMEs and it can have a remarkable impact on their performance [38]. Different costs are involved in the implementation of new technologies or systems that need to be integrated with the company for these processes cost such as the cost of maintenance and technical support to ensure the continuity of new technologies integrated into enterprises or the cost of training when the new technologies are integrated into the enterprises. The installation of new technologies to gain the benefits of Industry 4.0 are consider very expensive; therefore, the companies do not like to apply them in the factory sector, which is another challenge for the application of Industry 4.0 [43].
The poor management vision involves the support for new technologies and the adoption of innovations. With the support of top management, various studies can be done, and sufficient resources can be allocated for the adoption of new technologies. In Figure ??, the criterions and the factors involved are presented in a diagram by taking into account the answers obtained in the survey presented in Appendix A. The lack of advanced technology factor is the tough access to the use of technologies, which implies a low technological intensity production, according to the new technological trends. The experts have opined that the lack of technological device markets still create barriers for the Peruvian manufacturing business managers to think regarding industry 4.0.
insertion of new educational trends, such as: customizing learning based on each student's capabilities; learning at diverse times and places (virtual classes); using new learning devices, tools, and resources; execution of project-based and problem-based learning approaches; remote laboratories for teaching engineering; using collaborative and experimental learning; involving students in the curriculum design; and promoting mentorship programs is important for the development of skilled workers [57]. Step 3. Calculation of the priority (weight) of the criterion. After the hierarchical structure was established, the paired comparison matrices were developed with the results obtained from the 49 MSMEs managers opinion. Table 7 shows the first comparison matrix established between the main criteria. After the pairwise comparison matrix was obtained, the next step was the calculation of the normalized matrix, as is presented in Table 8. Then, the priority of each criterion (column Weight vector in Table 8) is obtained by merely calculating the average value per each row. In terms of the lack of financial investment, finance is a major restriction facing SMEs and it can have a remarkable impact on their performance [38]. Different costs are involved in the implementation of new technologies or systems that need to be integrated with the company for these processes cost such as the cost of maintenance and technical support to ensure the continuity of new technologies integrated into enterprises or the cost of training when the new technologies are integrated into the enterprises. The installation of new technologies to gain the benefits of Industry 4.0 are consider very expensive; therefore, the companies do not like to apply them in the factory sector, which is another challenge for the application of Industry 4.0 [43].
The poor management vision involves the support for new technologies and the adoption of innovations. With the support of top management, various studies can be done, and sufficient resources can be allocated for the adoption of new technologies.
Skilled workers are the key to make every global scenario different and to achieve that is necessary to demand a better education and development new skills [21]. A qualified workforce is very important for the development and implementation of Industry 4.0. The high demand for skilled workers and a lack of know-how is one of the biggest impediments to achieve the implementation of Industry 4.0 [40]. Enterprises will need qualified managers for complex global supply chains and very qualified employees. Also, to support ongoing efforts to upgrade pedagogy and course content, policy makers (which involves that compromise from the government) must work with educational institutions and industry and to ensure that youth workforce develops new skill sets [21]. The insertion of new educational trends, such as: customizing learning based on each student's capabilities; learning at diverse times and places (virtual classes); using new learning devices, tools, and resources; execution of project-based and problem-based learning approaches; remote laboratories for teaching engineering; using collaborative and experimental learning; involving students in the curriculum design; and promoting mentorship programs is important for the development of skilled workers [57].
Step 3. Calculation of the priority (weight) of the criterion. After the hierarchical structure was established, the paired comparison matrices were developed with the results obtained from the 49 MSMEs managers opinion. Table 7 shows the first comparison matrix established between the main criteria. After the pairwise comparison matrix was obtained, the next step was the calculation of the normalized matrix, as is presented in Table 8. Then, the priority of each criterion (column Weight vector in Table 8) is obtained by merely calculating the average value per each row. Once the priority of each criterion was calculated, it was necessary to review if they are consistent in order to continue with the method.
Step 4. Calculation and analysis of the consistency ratio of criterion. The CR was calculated by multiplying the pair-wise matrix by the weights vector (Equation (1)); as a result of that two vectors were obtained-weight sum (Equation (2)) and λ vector (Equation (3)), as is shown in Table 9. After obtaining λ max , the consistency index (CI) is calculated, as follows: Finally, the consistency ratio (CR) is calculated, as Equation (5) indicates: Since this value of 0.062 and is less than 0.10, it is assumed that the comparison matrix between criterion is consistent so is possible to continue with the decision-making process.
From Table 8, it could be seen that organization and government support are the two major reasons that influence MSMEs to consider the implementation of Industry 4.0. These are represented by relative weights of 0.632 and 0.219, respectively. These two criterions were strongly expressed by manufacturing managers surveyed. This can be assigned to the fact that they know the real condition of the manufacturing sector in the country. It is important to mention that the results are consistent with the findings presented by Gutarra et al. [58], who indicated that "An articulated and systemic regulatory framework that promotes technological development and innovation" is a variable that will support the future development of the Peruvian technological MSMEs.
Step 5. Calculation of the weight (priority) of each "alternative" with respect to the criterion, and creation of comparison matrices of alternatives with respect of each criterion and the respective consistency ratio. This step consists of identifying and deriving the relative weight of the alternatives with respect to each criterion. In other words, what are the priorities of the alternatives with respect to innovation, organization, industry competition, and government support, respectively? For this purpose, a pairwise comparison of all the alternatives with respect to each criterion was developed and followed based on the response of the 49 MSMEs business managers surveyed.
Comparison Question I: With respect to the innovation criterion, which alternative is preferable: Lack of advanced technology, lack of financial investment, lack of management vision, or lack of skilled workers? The results of this first question are presented in Table 10, followed by its normalized matrix presented in Table 11.   Table 12, followed by its normalized matrix presented in Table 13.  Table 14, followed by its normalized matrix presented in Table 15.
Comparison Question IV: With respect to government support criterion, which alternative is preferable: Lack of Technology, lack of financial investment, lack of management vision, or lack of government support? The results of this fourth question are presented in Table 16, followed by its normalized matrix presented in Table 17.
Step 6. This step consisted of calculating the final priority for each alternative; in other words, priorities that take into account only the weight of alternatives for each criterion but also consider the point that each criterion has a different weight. Table 18 shows the synthesis of Tables 8, 11, 13, 15 and 17.  Considering the importance of the organization as the most relevant criterion (0.632), financial investment (0.491) is the factor that affects the most in the implementation of Industry 4.0 in manufacturing MSMEs in Peru.

Discussion and Conclusions
The present research aimed to identify the factors that are affecting the implementation of Industry 4.0 in Peruvian MSMEs. The analysis of the criterions and alternatives were done by the AHP method. The AHP method was chosen for two reasons: (1) the identified problem involved more than one criterion and finding the solution required a multi-criterion decision-making method and (2) the method helped to determine the level of importance of the involved factors. Table 8 presents the resulted pairwise comparison of the criterion in perspective of the overall goal of the assessment. From this table, it could be seen that organization and government support are the two major reasons that influence enterprises' decision to consider the option of Industry 4.0 technologies. These are represented by relative weights of 0.632 and 0.219, respectively. These two factors were strongly express by the business managers during the interviews. This can be attributed to the fact that they face the reality of the sector. Although important, the weight (0.092) of innovation implies that the factor does not have meaningful influence in affecting managers' decision in the implementation of Industry 4.0 technologies. Meanwhile, from the result, it is likely that industry competition is not a major factor that managers consider because was with the least weight (0.057).
From Table 19, the lack of financial investment (0.491) is the factor that most interfere with the implementation of Industry 4.0 in Peruvian MSMEs. This is followed by a lack of advanced technology (0.225), poor management vision (0.173), and, finally, lack of skilled workers (0.111), in that order. The fact that Industry 4.0 technologies are not implemented in Peruvian MSMEs is supported by the organization criterion and, specifically, for the lack of financial investment factor. The high cost of investment and the long time of the return of the investment are factors that stop firms from being convinced. The factor for the development of MSMEs is the capacity to access finance. There is a very notorious difference between a large enterprise (LE) and an MSMEs when applying for bank loans because while the LEs have the chance to explore the potential of capital markets, the MSMEs only have limited financing possibilities as compared to large companies [59,60]. Understanding the benefits of Industry 4.0 technologies will make it easier for business managers to make positive decisions [55]. This study provides a transparent and consistent method of deciding the best factor that is likely to affect the decision of MSMEs in the implementation of Industry 4.0.
The literature review included in the present study explain the relationship between SMEs and Industry 4.0 [11,14,29,36], and most of the authors try to respond the answer: How can we help or make less challenging the adoption of Industry 4.0 solutions by SMEs? Even though each author point of view differs from each other, all conclude that part of the step is to let SMEs decide to consider the big step showing them the effectiveness of the technologies, that will be one the ways to attract the attention of traditional manufacturing.
The present study contributes to this literature by identifying four specific factors involved in the decision of MSMEs to give the big step from traditional manufacturing to Industry 4.0, and they are: Lack of advanced technology, lack of financial investment, lack of management vision, and lack of skilled workers. According to the findings, it has been identified that Peruvian manufacturing MSMEs need to work in strategies that will help to improve these four factors and give an opportunity to implement Industry 4.0 technologies. However, it would not be difficult for the country if it concentrated on technological integration and infrastructure development.
In this respect, it is highly recommended to the Peruvian government that they increase the support for the integration of Industry 4.0 technologies. Otherwise, the country will not be a part of the new industrial revolution, which could accelerate its present economic progress and would contribute to building a stronger economy in South America. A good example to cite is Thailand, where the government presented as the second point in their Agenda 3, a strategy called "the transformation of traditional SMEs into "Smart SMEs" "Thailand 4.0" [61], in which the objective is to increase the profit and contribution of SMEs. Basically, the government plans to expand SMEs through financial support for those enterprises that have business potential and management skills but lack financial liquidity.
This study is one of the first studies that analyzes the challenges of MSMEs in Peru; it presents the factors that are challenging the adoption processes and their reasons were approached analytically, but also has some limitations. First, we only include the data obtained from 49 enterprises, hence it cannot be generalized. Future research could increase the number of enterprises surveyed so a stronger generalization could be produced. Therefore, by systematically following all the scientific procedures, applying the AHP technique, it is further argued, could be one of the effective ways to find the best option that could help to solve a problem [48], but it is important to consider that the results obtained are based on the evaluations received from the business managers. The AHP methodology just defines which alternative is the most consistent based in the criteria and level of importance that we give them [62]. Considering the mentioned limits of the study, future researches may be made in order to improve the study.