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This paper aims to investigate the impact of monitoring and mentoring strategies on sustainability diffusion within supply networks through focal companies and how suppliers engage in implementing these strategies.

The paper reports on three in-depth case studies conducted with focal companies and their suppliers. An interaction approach was adopted to guide the analysis of focal companies’ strategies for implementing and diffusing sustainability in supply networks.

The monitoring strategy impacts sustainability diffusion at the dyadic level, while the mentoring strategy is a prerequisite for the diffusion of sustainability at the supply network level. The findings suggest that coupling monitoring with mentoring can lead to diffusion beyond first-tier suppliers. Interaction intensity, supplier proactiveness and mindset change facilitate sustainability diffusion in supply networks.

The authors suggest more research be conducted on specific practices within monitoring and mentoring, as some of these imply very different levels of commitment and interaction.

The paper suggests that in the future, companies will be increasingly called upon to adopt cooperative initiatives to enable the diffusion of sustainability in supply networks.

The contribution of the paper lies in its identification of the impacts of monitoring and mentoring strategies on the diffusion of sustainability in networks, revealing different supplier engagement in these strategies, which may foster or hinder sustainability diffusion.

The purpose of this paper is to explore the challenges facing companies that operate within complex supply networks and the strategies they use to manage such complex supply networks.

The paper uses mixed methods by combining in-depth case studies with an executive forum with those of senior industry stakeholders. The two in-depth supply network case studies were carried out through multiple interviews with focal (or ‘developer’) firms that supply energy through offshore wind power and key suppliers such as wind turbine manufacturers.

The findings show the challenges the offshore wind power industry faces because of complex supply networks, including attempts by several actors to exert their power and control. Despite the networks facing similar complexities and challenges, two distinctly different strategies for orchestrating and governing supply networks are uncovered: one strategy resembles an interventionist strategy, while the other is based on delegation.

Based on the findings, the authors identify and develop a classification of complex supply network divided into intervention and delegation strategies, thereby adding to existing research on ways to manage complex supply networks.

The authors identify strategies for focal firms for managing in complex supply networks, based on control and intervention or coordination and delegation.

Existing research on supply network strategies has largely focused on non-complex contexts. This paper draws from complex adaptive systems and organisational behaviour perspectives to contribute original insights into supply network strategies in complex supply networks.

Multiple stages of procurement for a product in a supply chain (SC) altogether form a “multi-Tier” supply network. The purpose of this paper is to develop and verify a systematic solution approach to ascertain the realistic cost advantage of a coordinated centralized sourcing strategy as compared to an isolated decentralized sourcing strategy for a multi-tier supply network under demand uncertainty.

The proposed systematic solution approach consists of seven steps to compare and contrast the cost advantage of a centralized coordinated sourcing strategy over a decentralized stage-wise sourcing strategy for a multi-tier supply network. A real-life automotive industry case analysis of two distinct products provides sufficient empirical evidence on the expected cost advantage of centralized coordinated sourcing strategy under demand uncertainty.

The case analysis affirms the practicability of the proposed seven-step solution approach to determine the realistic cost advantage of coordinated sourcing.

The scope of this research is restricted to a single product and two-tier supply network analysis. This research work also considers a restrictive assumption of negligible coordination cost.

The suitability of the proposed solution approach is verified using real-life case examples. This research provides theoretical insights and factual evidence to SC practitioners, so as to adopt a centralized sourcing strategy in a varied manufacturing environment.

There is no evidence of a systematic step-by-step solution approach to determine the cost advantage of a coordinated sourcing strategy over an isolated decentralized sourcing strategy for a multi-tier supply network under demand uncertainty.

In acknowledging the reality of climate change, large firms have set internal and external (supplier oriented) targets to reduce their greenhouse gas emissions. This study aims to explore the complex processes behind the evolution and diffusion of carbon reduction strategies in supply networks.

The research uses complex adaptive systems (CASs) as a theoretical framework and presents a single case study of a focal buying firm and its supply network in the food sector. A longitudinal and multilevel analysis is used to discuss the dynamics between the focal firm, the supply network and external environment.

Rather than being a linear and controlled process of adoption implementation outcomes, the transition to reduce carbon in a supply network is much more dynamic, emerging as a result of a number of factors at the individual, organisational, supply network and environmental levels.

The research considers the emergence of a carbon reduction strategy in the food sector, driven by a dominant buying firm. Future research should seek to investigate the diffusion of environmental strategies more broadly and in other contexts.

Findings from the research reveal the limits of the control that a buying firm can exert over behaviours in its network and show the positive influence of consortia initiatives on transitioning to sustainability in supply networks.

CAS is a fairly novel theoretical lens for researching environmental supply network dynamics. The paper offers fresh multilevel insights into the emergent and systemic nature of the diffusion of environmental practices in supply networks.

This paper proposes and empirically investigates two strategies that companies can employ to involve indirect suppliers in new product development (NPD): supply network delegation; and supply network intervention. The implications of the two strategies are explored.

The paper brings together the traditional NPD literature, organizational behaviour and organizational economics literature, and reports on three in‐depth case studies of NPD projects, involving 39 semi‐structured interviews across three supply networks.

The findings reveal different manifestations of the two strategies of supply network intervention and delegation, when applied as part of supplier involvement in product development, and positive and negative indications of delegation and intervention, depending on the actor perspective: manufacturers perceive a need to control the product development process across several supply network tiers through intervention in supplier selection and communication, but these actions are likely to “tie the hands of the suppliers”.

Managers are advised to explicitly delegate decisions to suppliers, for example, by issuing parts approval lists and encouraging communication and problem solving amongst suppliers, and to exercise caution in applying the intervention strategy.

The paper contributes to a better understanding of how to involve indirect (sub‐) suppliers in product development, and the implications of these actions for multiple supply network actors.

The purpose of this paper is to compare supply network strategies of district firms (from now on ID) and non‐district (non‐ID) firms with the aim of outlining emerging strategies as well as identifying similarities and differences between business models.

The analysis is based on a quantitative approach: the TeDIS survey focuses on 45 leading Italian districts and SMEs located outside districts (Made in Italy sectors). Results refer to 630 Italian firms.

There are more similarities than differences between the approach of ID and non‐ID companies to supply networks. ID firms rely more on local systems in terms of supply networks, while non‐ID firms have also invested at national level (subcontracting networks). The global geographical extension of supply networks stresses the ID companies' search for efficiency in addition to value‐added competences. Non‐ID firms have a more hierarchical approach to internationalization than ID firms, but differences decrease as the size of the companies increases.

The study is still preliminary. Future research should explore the relationships between the strategic approach to supply networks of district firms and non‐ID firms in terms of characteristics of the relationship management and aims of relationships, also with a focus on the size of these firms.

Within the existing literature, the original contribution of the paper lies in its comparison of supply network strategies in ID and non‐ID firms based on a significant quantitative analysis.

Managing firms’ supply network is a difficult task. The process is complex because it involves many interrelated business decisions, and a wide range of companies at different levels. So far, little is available to assist managers in analysing and monitoring a supply network performance. This paper proposes a tool, supply network analysis process (SNAP), to address this gap. SNAP can be implemented in a three‐stage process. The tool enables managers to explore, connect, and visualise the interaction of network decisions in such a way that it is easy to understand and communicate, that engage more people within an organization, and that unlock the creativity of participants. A case study is used to illustrate the application of the SNAP tool. Finally, the implication of this research to managers and academics is discussed.

Purchasing has emerged as a key source of competitive advantage. This paper aims to explore how different purchasing strategies are connected to complex supply relationships and to the goal of purchasing.

The study draws on the literature on industrial network theory and industrial buying behaviour.

The contribution describes six types of purchasing strategies that firms exert. These strategies depend on the complexity of supply relationships and the buyer's purchasing goal. Conventional products and services are bought through transactional exchange relationships, whereas strategically important items are purchased through intentional supply networks.

Purchasing strategies of a firm emphasise either efficiency or effectiveness of operation. The type of exchange varies according to the nature of supply relationships: it is either transactional or relational. A key implication for managers is that they should recognise the goal of buying, the strategic importance of the object of purchasing, and choose accordingly between the different types of supplier structures.

The paper shows that firms' purchasing strategies depend on the nature of their supply relationships and the motive for purchasing. Different strategies emphasise different aspects and events that ultimately manifest themselves in the firms' business models.

The research question is how can a company implement a circular innovation in a supply network context? Leveraging the main conceptual and interpretative models of the industrial marketing and purchasing thinking, this study aims to investigate the interplay between the process of circular innovation development and the changes in the structure and dynamics of the supply network in which innovation takes place.

This research applies a case study design focusing on participant interaction dynamics. The case relates to an industrial company producing an innovative coating solution for compostable packaging. The data used to develop the case study came from multiple sources but primarily from semistructured interviews that cover the implementation of the circular innovation and the configuration of the circular network.

The dynamics of interconnected relationships can configure a circular network that interconnects business and non business actors through vertical, horizontal and heterogeneous relationships. The network configuration is supported by the new mobilizer actor that facilitates the sharing of circular knowledge within the circular network, together with the sharing of a market orientation and entrepreneurial orientation within the supply network, through the educational learning path.

This paper aims to contribute to a new understanding of how circular innovation can be developed, adopted and diffused. In a network, when circular innovation takes place, the focal issue is not the new product or technology in itself but how such innovation is developed and implemented by and through the reconfiguration of the business and non-business relationships into circular network.

This paper attempts to address three key objectives. The primary aim is to enhance sourcing strategy for a centralized and coordinated multitier multiple suppliers networks with uncertain demand and supplier failure risks. The second objective is to enumerate all possible practical supplier(s) failure scenarios and quantify expected loss of demand cost. Finally, the work illustrates statistical experimentation to identify “influential” variables that can significantly impact the expected supply network and loss costs.

A seven-step solution framework is proposed to derive an optimal sourcing strategy for the specific network configuration with varied supplier failure scenarios. Five distinct models are formulated to address all possible scenarios of supplier failure events. Mixed-integer nonlinear programming technique is used to derive expected supply network cost and loss cost. The solution framework is verified using a real-life case.

A cross-case analysis indicates that an increase in suppliers' failure risk (SFR) probabilities or customer demand rate increases the expected loss of demand costs for a multitier supply network. Besides, an increase in unit component prices increases the expected supply network cost.

A two-tier automotive supply network for a single product is considered for all case studies.

The enhanced strategy can facilitate practitioners enumerate different supply network failure scenarios and implement the best solution.

There is no evidence of earlier research to derive optimal sourcing strategy for a centralized, coordinated multitier multiple supplier's network, considering demand uncertainties and SFR.