Drivers and Outcomes of Green IS Adoption in Small and Medium-Sized Enterprises

Using the Belief Action Outcome (BAO) framework as a theoretical basis, this study investigates the mechanisms that link organizational beliefs about environmental sustainability with Green information system (IS) actions that are undertaken and, hence, the organizational benefits accruing from these actions. Survey data were collected from 156 small and medium-sized enterprises (SMEs) and analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). The results support the notion that Green IS endeavors lead to increased organizational benefits. External pressures from stakeholders and employees’ attitudes to environmental sustainability affect the organizational attitude to Green IS. The attitude to Green IS is further translated into the organization’s strategy and corresponding Green IS actions, resulting in organizational benefits. This study’s main contribution lies in establishing a link between personal attitudes, institutional mechanisms, internal environmental/sustainability initiatives, and performance implications. Green IS adoption was empirically validated considering the SME context.


Introduction
In recent years, several environmental and sustainability studies have suggested that smart use of information technology (IT) and information systems (IS) can substantially help green the planet [1,2]. Since organizations are increasingly recognizing environmental sustainability as an urgent problem, they might adopt a range of different 'Green' practices to enhance the efficiency of their business processes. According to Loeser [3], 'Green' refers to technologies and/or processes that are environmentally friendly and have a smaller negative impact on the natural environment than conventional ones.
During the past decade, the role of smart use of IT/IS in contributing to environmentally responsible human activity has been widely discussed in the literature, whereas the terms Green IT and Green IS have often been used interchangeably, synonymously, and/or without acknowledging the differences [4]. Some authors try to clarify the similarities and differences of these two terms [3,[5][6][7]. Among others, Loeser [3] unambiguously distinguishes the scopes of Green IT and Green IS, describing the concepts as follows: • The Green IT concept refers to measures and initiatives that lower the negative environmental impact of manufacturing, operations, and the disposal of IT equipment and infrastructure.

•
The Green IS concept refers to practices which determine the investment in, deployment, use, and management of IS in order to minimize the negative environmental impacts of IS, business operations, and IS-enabled products and services.
• reduce costs by increasing the resource efficiency of IT infrastructure resources [11,12] and organization-wide business processes [2]; • enhance corporate reputation by shrinking the organization's environmental footprint while providing tools for tracking and reporting environmental performance [13,14]; and • facilitate and improve organizational capabilities for green product and process innovations, which can result in long-term organizational advantages [15][16][17][18].
Due to the substantial possible benefits of applying Green IS initiatives, this area has attracted the attention of many authors. However, an in-depth literature review (see Section 2) reveals that the implementation of Green IS by small and medium-sized enterprises (SMEs) has not been researched sufficiently, and represents a deficiency that needs to be rectified. SMEs make up between 95%-99% of private businesses in the world, and 99% of all businesses in the EU [19]. They employ 60%-70% of the workforce in most countries and on average generate 50% to 60% of value added [20]. Therefore, the attitude of SME managers to Green IS initiatives is an important issue that calls for deeper reflection. Namely, SMEs account for a large share of world pollution and thus reducing the environmental impact of SMEs in both manufacturing and services is a key factor in successfully greening the economy [19].
This paper aims to investigate the adoption of Green IS in SMEs from the viewpoint of enterprise management. Further, this paper seeks to analyze how SME managers perceive the impact of adopting Green IS on SMEs' benefits. For this purpose, a conceptual model was developed and tested in an empirical study carried out among Slovenian SMEs. Like Gholami et al. [21] and Loeser et al. [9], the model is based on the Belief Action Outcome (BAO) framework developed by Melville [1]. Namely, the BAO framework is established as the most suitable theoretical framework for integrating the antecedents of Green IS adoption with the consequences of such adoption [9,21]. To examine relationships among the model components, Partial Least Squares Structural Equation Modeling (PLS-SEM) is performed. The results are then presented and discussed.
The remainder of the paper is structured as follows. First, the results of a relevant literature review are outlined and the theoretical background of the BAO framework briefly described. Moreover, the research model and the proposed hypotheses are developed. The methodology of our empirical study is then explained and the results are given and discussed. The conclusions are outlined by means of research implications, the study's limitations, and future research recommendations. articles published in the Green IS domain are conceptual, as opposed to impact studies that analyze organization-level outcomes empirically ( [48] as cited in [9]).
Moreover, we investigated the literature on sustainability initiatives in SMEs. We found several studies addressing the general green practices for improving SME business in a sustainable way (e.g., [49][50][51], while Álvarez Jaramillo et al. [52] analyzed the barriers faced by SMEs when implementing initiatives for sustainable development. Many studies investigate the importance, drivers, or barriers to environmental, green, or sustainable SMEs' innovation in a specific environment (e.g., the food and beverage sector [53]; French SMEs [54]; European SMEs [55]; Malaysia SMEs [56][57][58]. Moreover, Kraus et al. [59] showed that a focus on environmental sustainability can build the foundation for a path to social performance in SMEs. The authors showed that networking and communicating with companies in similar or the same industries can be a crucial factor to success of a sustainable SME. Given the sustainable entrepreneurship orientation perspectives, several important insights concerning the factors that stimulate responsible managerial practices are provided by study of Kraus et al. [60]. We also found a few papers which examined the drivers of Green IT adoption in SMEs [46,[61][62][63][64]. In addition, Foogooa and Dookhitram [65] proposed a useful Green IT maturity assessment tool for SMEs. However, we were unable to find any paper concerning Green IS adoption and/or the outcomes of Green IS evaluation in the SME environment.
The literature review allows us to conclude the following: • There is a lack of empirical studies analyzing the antecedents and outcomes of Green IS initiatives.

•
The specific aspects of SMEs as important drivers of global sustainability are not addressed in the Green IS literature.

•
The BAO framework is a theoretical framework, which (unlike other theories or frameworks) enables understanding of both the antecedents of Green IS adoption and integrates them with the outcomes of such adoption.
These statements provided the fundamental starting points for our research.

Research Model and Hypotheses
To analyze what motivates the adoption of Green initiatives by SMEs and to estimate the outcomes, a conceptual model was developed. The perception of SME managers was taken into account while developing the model. Since top management is shown to be one of the most effective predictors of IT adoption [6], it is expected that the managers of SMEs also play an important role in conveying the strategic importance of Green IS across the organization and in making resource allocation [21]. We built our model on the BAO framework [1]. This framework is suitable for SMEs because it links macro-level constructs (society, natural environment, regulations) with micro-level constructs (individuals, organization) to study the role of IS in environmental sustainability. The BAO framework also argues that managerial beliefs and commitments lead to organizational action, eventually producing outcomes which may be subjective (such as the fulfilment of corporate social responsibility, building a reputation, and brand equity) or objective (such as reduced energy consumption due to green IT, and the net impact on profits) [66]. A quick presentation of the BAO framework, explanations of belief and action formations as well as outcome aspects is given in [8] and [9]. In accordance with the BAO framework, developing our model consists of a definition of the belief formation, action formation, and the outcomes of implementing Green IS initiatives in SMEs.
Building on previous studies, we conceptualized the outcome construct of our model as perceived organizational benefits due to Green IS initiatives and their implementation (H 8 , H 9 , and H 10 ). In our opinion, the meaningful organizational benefits arising from Green IS initiatives are: lower waste and emissions [1,3,21,22], reduced energy consumption [21,22], a higher level of social responsibility [6,53], a greater level of employees' environmental awareness [5], and an improved company image [9,21].
Action formation describes how psychic states concerning Green IS initiatives translate into actions and Green IS practices. Many authors found that organization strategy is one of the general determinants of green innovations and green IT/IS adoption [67,68]. Therefore, we regard a "sustainability oriented" organization strategy as a trigger for implementing Green IS practices which support and stimulate the prevention of pollution (H 7a ), product stewardship (H 7b ), and sustainable development (H 7c ) [3,10,21,22,68]. Green IS practices focusing on pollution prevention refer to the innovation and use of information systems (such as enterprise carbon and energy management systems) to reduce pollution generated by business operations. Green IS practices focusing on product stewardship refer to the innovation and use of IS (such as enterprise digital platforms and communication and collaboration systems) that enhance the environmental friendliness of upstream and downstream supply chains [10]. Green IS practices focusing on sustainable development refer to the innovation and use of IS that transform business operations [69].
To develop the belief formation of our conceptual model, we relied on previous studies that analyzed the organizational motivations for adopting Green IS or Green IT. Authors established that external pressures shape executives' personal beliefs and result in sustainability actions [1,21]. Therefore, this study incorporates institutional theory to identify main motives for adoption of Green IS. Based on these theoretical lenses, three types of pressures could be emphasized, namely coercive isomorphism, mimetic processes, and normative pressures [70]. However, we followed the approach of Chen, Boudreau, and Watson [71] who focused on two types of isomorphic pressures-mimetic and coercive pressures. The mimetic pressures (i.e., organizations will follow leading organizations that have already taken up Green IS initiatives) are important, since they drive organizations to adopt Green IS practices due to the positive outcomes shown by other organizations' Green IS practices [10]. It could also be argued that when organizations are faced with high level of environmental uncertainty, they may mimic the action of an organization they deem as being legitimate [70,72]. Hence, this study advocates that pressures from competitors and other stakeholders influence the adoption and diffusion of Green IS by SMEs. Furthermore, the coercive pressures (i.e., externally codified rules, norms, or laws that give legitimacy to business practices) have a significant impact on sustainable development as concerns SMEs [73]. Deng and Ji [6] reported that regulations, environmental laws as well as demands from key stakeholders require organizations to operate in an environment-friendly way and force them towards more of an eco-style. Accordingly, like with Gholami et al. [21] and Deng and Ji [6], we assumed that mimetic pressure and coercive pressure will positively affect the organizational attitude to Green IS (H 1 and H 2b ), while coercive pressure is positively associated with a sustainability-oriented organization strategy (H 2a ). However, it has been found that Green IS implementation is not a pure organizational phenomenon driven by external pressures but a collective behavior involving individual and institutional effort for the ecological goal at large [68]. Therefore, we agree with Gholami et al. [21] who argued that managers' attitudes and beliefs about the natural environment motivate organizational action to intensify Green IS adoption (H 5a ). Further, we presumed that the manager's personal attitude to the environment is positively influenced by their attitude to the future (H 4 ) and by their social network (H 3 ). In our opinion, if a person is concerned about the future, they are most likely also concerned about the environment. Besides, some prior studies suggested a positive correlation between social network use and attitudes about the environment ( [74] as cited in [1]). Finally, similarly as Loeser et al. [9], we conceptualized personal attitude to the environment and organizational attitude to Green IS as an antecedent of a sustainably oriented organizational strategy (H 5b and H 6a ). The authors [9] also provided evidence suggesting that environmental orientation of an organization positively affects the implementation of Green IS practices. Therefore, we presumed in our model that the organizational attitude to Green IS is positively associated with the Green IS practices, i.e., the use of IS for preventing pollution (H 6b ), product stewardship (H 6c ), and sustainable development (H 6d ).
Arising from the above discussion, we present our research model in Figure 1, and summarize the proposed hypotheses as follows:

Hypothesis 8 (H8).
The use of IS for preventing pollution is positively associated with organizational benefits. Hypothesis 9 (H9).
The use of IS for product stewardship is positively associated with organizational benefits. Hypothesis 10 (H10). The use of IS for sustainable development is positively associated with organizational benefits.

Hypothesis 1 (H 1 ).
Mimetic pressure is positively associated with the organizational attitude to Green IS.

Hypothesis 2a (H 2a ).
Coercive pressure is positively associated with a sustainability-oriented organization strategy.

Hypothesis 2b (H 2b ).
Coercive pressure is positively associated with the organizational attitude to Green IS.

Hypothesis 3 (H 3 ).
The manager's social network is positively associated with their personal attitude to the environment.

Hypothesis 4 (H 4 ).
The manager's attitude to the future is positively associated with their personal attitude to the environment.
Hypothesis 5a (H 5a ). The manager's attitude to the environment is positively associated with the organizational attitude to Green IS.
Hypothesis 5b (H 5b ). The manager's attitude to the environment is positively associated with a sustainability-oriented organization strategy.

Hypothesis 6a (H 6a ).
The organizational attitude to Green IS is positively associated with a sustainability-oriented organization strategy.

Hypothesis 6b (H 6b ).
The organizational attitude to Green IS is positively associated with the use of IS for preventing pollution.
Hypothesis 6c (H 6c ). The organizational attitude to Green IS is positively associated with the use of IS for product stewardship.
Hypothesis 6d (H 6d ). The organizational attitude to Green IS is positively associated with the use of IS for sustainable development.

Hypothesis 7a (H 7a ).
A sustainability-oriented organization strategy is positively associated with the use of IS for preventing pollution.

Hypothesis 7b (H 7b ).
A sustainability-oriented organization strategy is positively associated with the use of IS for product stewardship.

Hypothesis 7c (H 7c ).
A sustainability-oriented organization strategy is positively associated with the use of IS for sustainable development.

Hypothesis 8 (H 8 ).
The use of IS for preventing pollution is positively associated with organizational benefits.
Hypothesis 9 (H 9 ). The use of IS for product stewardship is positively associated with organizational benefits.
Hypothesis 10 (H 10 ). The use of IS for sustainable development is positively associated with organizational benefits.

Questionnaire Development
In order to apply the model shown in Figure 1, we developed a questionnaire in which every model construct was represented by several indicators (i.e., questions). The total number of measured indicators was 40 (see Table 1), where most of them were adapted from instruments validated in previous studies (e.g., [21,28]). Almost all indicators were measured on a 5-point, Likert-type scale of agreement, with 1 meaning strongly disagree, and 5 strongly agree. The question regarding the presence of sustainable development principles within the organizational strategy was answered with "yes" or "no".

Data Collection and Sample Characteristics
A web survey was performed in which 3,623 randomly selected SMEs from Slovenia (representing 2% of all Slovenian SMEs) were invited to collaborate. This sample matched the demographic structure of Slovenian SMEs according to their region and main activity.
We received 210 survey responses; of these, 54 were incomplete and were thus omitted from further analysis. The final sample size was therefore 156 SMEs (23.7% having up to 9 employees, 48.1% having 10-49 employees, and 28.2% having 50 to 249 employees). The SMEs participating in the survey come from different areas (classified according to [75]), where the biggest share of them (14.1%) are from Other Service Activities, 11.4% from Information and Communication, and 8.7% from Manufacturing.
The invitation to participate in the survey was addressed to SMEs' managers who were asked to forward the survey to the SME's CIO or another person with profound IS knowledge. Regarding the respondents' position, 20.8% of them were CEOs, 20.1% heads of departments, 13.2% CIOs, 4.2% external IS consultants, while 41.7% of the respondents listed another job position; 53.7% of them were male and 46.3% female, where the respondents' age varies from 24 to 61 years (M = 43.11 years, SD = 9.33 years).

Statistical Methods
Data obtained from the survey were analyzed using the PLS-SEM approach with R package plspm [76,77]. PLS-SEM may be used when only a small sample is available to estimate the relationships between the model constructs with several indicators [78][79][80].
The analysis was performed using the standard two-stage approach, wherein first the measurement model and, second, the structural model were evaluated [77]. In the first step, the measurement model was assessed to determine how well the indicators reflect the theoretical latent variables. In step two, the structural relationships among the model constructs were tested. The PLS-SEM results are presented with the values of the path coefficient (representing the relationships between the model constructs) together with the t-statistics values (calculated based on model validation using the bootstrap procedure) and the significance level. Further, for each endogenous latent variable of the model a coefficient of determination (R 2 ) was calculated, representing the percentage share of the variance explained by the set of the predictors for that variable.

Descriptive Statistics
First, descriptive statistics were calculated for all model constructs as well as their indicators. The results are listed in Table 1.

Evaluation of the Measurement Model
According to Ravand and Baghaei [79], the measurement model is evaluated in terms of the unidimensionality of the latent variables, convergent validity, and discriminant validity. The unidimensionality of latent variables is assessed by Cronbach's alpha, composite reliability through Dillon-Goldstein's rho (both indices should exceed 0.7), and principal component analysis by examining the first two eigenvalues where the first eigenvalue should be larger than 1 and the second one much lower, below 1.
Convergent validity is achieved when the average variance extracted (AVE) (measuring the amount of variance captured by the model construct relative to the amount of variance attributable to measurement error) of each construct exceeds 0.5 [80] and the factor loadings of its indicators are above 0.7 [79].
The model's discriminant validity is examined in two ways: first, by analysis of the indicators' loadings and cross-loadings and, second, by comparing the value of the square root of AVE of each construct with the correlations between other constructs. To prove discriminant validity, the loadings of the indicators of a particular construct must be greater than the corresponding cross-loadings, while the values of the square root of AVE for a particular construct must be greater than the corresponding correlations between other constructs [80].
While evaluating the measurement model, it was found that loadings of the indicators PAF4 and PAF3_R (see Table 1) were below 0.7 (0.336 and 0.591, respectively, with AVE equal to 0.399 and 0.472). Therefore, these indicators were removed from the model in two sequential steps. Results of the final model's evaluation are shown in Tables 2-4.
The results presented in Table 2 show the values of Cronbach's alpha and Dillon-Goldstein's rho easily satisfy the criterion of being larger than 0.7 for each latent variable. Further, the values of eigenvalues also prove the measurement model's unidimensionality. Table 3 reveals that almost all the factor loadings are larger than 0.7. One exception is the loading of the indicator PAF5 that is slightly below 0.7 (0.651). According to Esfahani et al. [33], this is not critical since the loading factor is above 0.4 while other indices of the PAF construct are well above the desired thresholds (composite reliability through Dillon-Goldstein's rho is 0.806 > 0.7 (Table 2) and the corresponding AVE value is 0.580 > 0.5 (Table 4)). Moreover, Table 4 shows the values of AVE for all constructs exceed 0.5 (the smallest is for PAF 0.580), indicating the model has high convergent validity. Loadings of the indicators of each model construct are denoted with bold in Table 3. It may be seen from Table 3 that the loadings of the indicators of each model construct are larger than the corresponding cross-loadings. The correlations between the model's constructs are shown in the right panel of Table 4, while the diagonal elements in the correlation matrix that have a value of 1 are replaced by the values of the square root of AVE. It is evident that the values of the square root of AVE for the corresponding model construct are all greater than the interconstruct correlations. This shows the indicators have more in common with the construct they are associated with than they do with the other constructs. Therefore, discriminant validity can be inferred for all model constructs.
To summarize the measurement model evaluation, the unidimensionality, convergent validity, and discriminant validity indices were all above their recommended thresholds and therefore the developed measurement model is reliable and valid for use in assessing the structural model of the study.

Evaluation of the Structural Model and Hypotheses Testing
The structural model presented in Figure 1 was evaluated by estimating paths between the model constructs. Results are listed in Table 5 where it can be seen that 15 of the 17 hypotheses were supported, while 2 were rejected.  Figure 2 shows the evaluated structural model. The coefficient of determination R 2 is also calculated for every endogenous latent variable. This coefficient determines the model's predictive capability if its value is greater than 0.1 [81]. Figure 2 reveals that all values of R 2 fulfil this requirement.
Since PLS-SEM is a nonparametric statistical procedure, the significance of the path coefficients and the precision of the estimates should be checked through standard errors provided by bootstrap validation [79]. As suggested by Chin [82] and Hair et al. [83], 500 samples were drawn in the bootstrap validation. Results of the bootstrap validation of the structural model and testing the significance of the path coefficients are given in Table 6, while the results of the bootstrap evaluation of the factor loadings are included in the Appendix A.
The values of the t-statistics in Table 6 are calculated as the original path divided by the standard error from the bootstrap [84]. The significance of the path coefficients is examined based on the value of t-statistics and corresponding critical values t 0.05 , t 0.01 , and t 0.001 . The results provided in Table 6 show that all coefficients of paths were indicated to be significant, and can be proclaimed as significantly different from zero. Since PLS-SEM is a nonparametric statistical procedure, the significance of the path coefficients and the precision of the estimates should be checked through standard errors provided by bootstrap validation [79]. As suggested by Chin [82] and Hair et al. [83], 500 samples were drawn in the bootstrap validation. Results of the bootstrap validation of the structural model and testing the significance of the path coefficients are given in Table 6, while the results of the bootstrap evaluation of the factor loadings are included in the Appendix A. The values of the t-statistics in Table 6 are calculated as the original path divided by the standard error from the bootstrap [84]. The significance of the path coefficients is examined based on the value of t-statistics and corresponding critical values t0.05, t0.01, and t0.001. The results provided in Table 6 show that all coefficients of paths were indicated to be significant, and can be proclaimed as significantly different from zero.

Discussion
Drawing on the theoretical framework of the BAO [1], we investigated whether internal and external drivers affect Green IS adoption, and to what extent different Green IS initiatives enhance

Discussion
Drawing on the theoretical framework of the BAO [1], we investigated whether internal and external drivers affect Green IS adoption, and to what extent different Green IS initiatives enhance performance outcomes. The embedding of green sustainability in SMEs has received growing attention in research (e.g., [85]), yet our understanding of the antecedents and consequences of Green IS adoption in SMEs remains relatively unclear. Our study underscores previous conceptual assertions (e.g., [86]) advocating the importance of SMEs adopting an information system to support their sustainable development efforts. In this regard, the present study extends understanding to the conceptual mechanisms by which SMEs adopt Green IS, especially by a consideration of the context in which it occurs (i.e., coercive pressure and internal attitude to green initiatives as driving forces) and, specifically, by examining the actions towards Green IS adoption and their performance implications. Therefore, this study adds to the environmental management and Green IS literature in several important and distinct ways. For instance, current environmental management studies do not provide clear evidence of the performance benefits of environmental initiatives, particularly of Green IS adoption in SMEs. In this respect, the present study establishes a link between personal attitudes, institutional mechanisms, internal environmental/sustainability initiatives and performance implications.
The study findings show that, while there is no association between mimetic pressure and organizational attitude to Green IS, the former is positively influenced by coercive pressure. This then suggests that formal rules, regulations, and pressures from powerful stakeholders on which the organizations are dependent are considered as important factors that drive an organization (especially an SME) to include Green IS in its sustainability strategy. Institutional theory has also been applied in previous studies [87] that examined Green IS, particularly for identifying driving forces or motives behind organizational endeavor to become a more sustainable company. By focusing on the SME context, our study extends previous studies on Green IS that used institutional theory as a theoretical lens to study the organizational response to environmental issues [6,21]. Similarly to the study of Bose and Luo [88] and Chen et al. [10], our study excluded normative pressure to avoid any potential confounding between normative, mimetic, and coercive pressures. Engert et al. [89] provided a thorough literature review to systematically summarize the internal and external drivers of sustainability as well as to emphasize the supporting and hindering factors with respect to integrating corporate sustainability. The findings of that research can, to some extent, substantiate our results, suggesting that manager and employee attitude is essential for integrating sustainability into strategic management. However, as far as the internalization (i.e., embedding Green IS practices into daily practice) of Green IS is concerned, SMEs often face certain constraints such as a skills deficit and knowledge limitations [90,91].
Our findings show that both preventing pollution and sustainable development are effective sources of perceived organizational benefits. These findings further confirm previous studies (e.g., [21]) which found support for arguments regarding the positive impact of Green IS on an enterprise's environmental performance. Further, Green IS adoption may also be conceived as a source of innovation [92] that can ultimately bring competitive advantage [93]. The findings of our study hence demonstrate the importance of Green IS adoption for predicting performance outcomes. In particular, the SME research context used in this study contributes to the literature on Green IS, chiefly by highlighting the mechanisms through which an enterprise can gain performance benefits. Although our study did not test the link between Green IS and economic performance, one may argue that enhancing organizational benefits could ultimately lead to enhanced economic performance. Earlier studies (e.g., [94]) also suggest there might be a reciprocal causal mechanism linking environmental performance and economic performance. However, this is not necessarily the case for SMEs since a lack of resources often leads them to be less willing to invest in new technologies, especially concerning the payback period [19,91]. Our results allow the argument that SMEs have room for improvement in the area of adopting tools and technologies that support sustainable development goals.

Managerial Implications
The results of our study demonstrate that organizations would benefit from efforts to adopt and maintain Green IS. Key factors that foster Green IS adoption in SMEs are: external pressures from a diverse range of stakeholders (e.g., customers, suppliers, governmental agencies, etc.); internal perception, knowledge, and attitude to environmental issues; strategic orientation of an organization. The positive impacts of employee and organizational attitude to Green IS convey an important message for organizations by highlighting the need to enhance employees' engagement in pro-environmental behaviors [95]. Thus, managers should be aware of the important role they play in building a green climate, especially as concerns the attitudes and behaviors that are valued among employees. The manager should first ensure the organization's motivation for implementing Green IS is internally oriented rather than being merely externally oriented. Moreover, it is essential to include the Green IS adoption on the strategic level of the organization by having a clear prioritization of the organization's sustainability initiatives in mind.

Conclusions
This study enhances understanding of the use of Green IS in translating sustainability strategy into organizational performance outcomes. Therefore, the presented framework can help scientists and managers identify the potential implications of adopting Green IS. Despite growth in Green IS in recent years, practice is still mainly in the domain of large companies and often associated with notions of expense for small companies. This study aims to fill this research gap by indicating that Green IS is an important driver for making SMEs be more efficient and effective. In light of this, the current study outlines the importance of examining use of Green IS from a comprehensive perspective that guides SMEs in assessing their approach to Green IS adoption and deployment. Accordingly, it helps organizations identify appropriate Green IS initiatives as a way of achieving organizational benefits through effective implementation of a sustainability strategy. More specifically, the study highlights the importance of the beliefs, actions, and outcomes of Green IS adoption. Given the importance of Green IS in implementing a sustainability strategy, managers should be aware that simply integrating Green IS initiatives into strategy might not help their organizations achieve their performance goals.
In addition, special attention should be paid to enhance employees' attitudes to green issues and Green IS. It is crucial to understand that organizational attitudes to Green IS can directly and indirectly via strategy effect the extent to which SMEs use Green IS, which ultimately leads to enhanced performance outcomes. The main conclusion to be drawn from this study is that there are distinct internal and external critical areas that should be considered by SMEs wishing to implement Green IS effectively. In this regard, the present study proposes a novel research model to explore both the antecedents and consequents of Green IS adoption in SMEs.

Limitations and Future Directions
Despite its many contributions, this research is also not without limitations. First, this study resorted to perceptual measures for measuring performance outcomes. While this is still acceptable, future studies could improve this area by using real metric and objective data wherever available. Notwithstanding the fact that considerable effort and time was devoted to developing the measurements, and the fact that PLS-SEM analyses meet most of the acceptable criteria, room remains to improve the research model. As such, future studies may extend other perspectives by integrating additional attributes and properties into these constructs. Moreover, future studies could extend the context from Slovenian SMEs to those located in other countries, mainly to verify the generalizability of this study's findings and to study cultural and regional differences concerning Green IS adoption [40]. Further research on Green IS could also apply a qualitative research approach (e.g., Action design research) or a combination of qualitative and quantitative research methods (e.g., Design Science Research) to help extend and promote the research results in the business sector. This study is based on cross-sectoral industries given its position as one of the early empirical studies to investigate Green IS adoption in SMEs. Like with other cross-sectional studies, caution should be taken while interpreting the cause and effect between the variables examined in the study. Therefore, future research should consider the possibility of using longitudinal data to improve the study findings. It is also recommended that future studies focus on a single industry where the pattern of Green IS deployment is more homogeneous in order to produce more refined insights into the phenomenon under study. Research on Green IS adoption in SMEs could also involve analysis of the social networks of individuals, specifically influencers or managers, which might result in further recommendations for the promotion of Green IS.

Conflicts of Interest:
The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.

Appendix A
Results of bootstrap validation for factor loadings.