(1) (RQ 1.1) 1How can digital technologies be included in existing PSS?

(2) (RQ 1.2) How digital technologies impact on the PSS design?

(1) (RQ 2.1) Thanks to digital technologies, is it possible to design customized PSS in real-time (self-adaptable solutions)?

(2) (RQ 2.2) How to improve PSS customer experience applying digital technologies?

(1) (RQ 3.1) How can the end of life of PSS be considered at an early stage of design? Furthermore, how can digital technologies contribute to this?

(1) (RQ 1.3) Which digital tools can be implemented during the development of a PSS to improve its future sustainability performance?

(1) (RQ 2.3) How extend the usage phase of PSS lifecycle applying digital technologies?

(2) (RQ 2.4) What are the effects on the social sustainability of Smart PSS?

(1) (RQ 3.2) How can digital technologies reduce the environmental impact of the end of life of a PSS?

(1) (RQ 1.4) What is the extent of digital servitization? What are the challenges that manufacturing companies face and the main barriers?

(2) What core competencies and capabilities are required to approach the digital servitization process?

(1) (RQ 2.5) How can servitized companies leverage user-generated data from smart PSS to increase their competitiveness?

(1) (RQ 3.3) How can servitized companies benefit from smart recycling strategies?

(1) (RQ 1.5) How to integrate digital technologies in the early stages of development of PSS to reduce their environmental impact?

(1) (RQ 2.6) How can the user-generated data collected by connected PSS improve their sustainability performance?

(2) (RQ 2.7) What impact can smart maintenance operations have on the sustainability of a PSS? Furthermore, how to implement these maintenance strategies?

(1) (RQ 3.4) How can digital technologies facilitate the process of reuse and conversion of PSS at the end of their life cycle?

(2) (RQ 3.5) How to integrate IoT technologies to facilitate the recycling of tangible components of a PSS?

(1) (RQ 1.6) Can the introduction of digital technologies lead to new business models for PSS?

(2) (RQ 1.7) How to integrate digital platforms in PSS business models?

(3) (RQ 1.8) How to facilitate circular economy practices using Smart PSS?

(1) (RQ 2.8) How can value-cocreation be improved in Smart PSS?

(2) (RQ 2.9) What are the opportunities offered by collaborative consumption strategies during the usage phases of PSS?

(1) (RQ 3.6) Is it possible to define new business models based on the residual end-of-life value of PSS? Moreover, how digital technologies can drive these business models?

(1) (RQ 1.9) How does the addition of digital technology development impact the performance of a PSS design?

(1) (RQ 2.10) How to optimally use IoT technologies to monitor PSS performance?

(2) (RQ 2.11) How to measure perceived quality and customer satisfaction of smart PSS?

(1) (RQ 3.7) How to measure the performance of smart recycling activities?

(1) (RQ 1.10) Which new requirement categories should be considered for the development of Smart PSS?

(1) (RQ 2.12) How can smart PSS collect new requirement during their delivery?

(2) (RQ 2.13) How can big data analysis influence requirement elicitation?

(1) (RQ 3.8) What new requirements must be considered for the development of PSS, including smart recycling strategies?

(1) (RQ 1.11) How can Cyber-Physical industrial systems be adapted to incorporate PSS logic?

(1) How can smart industrial PSS improve relationships between players in manufacturing ecosystems?

(1) Is the reuse or conversion of the tangible component of a smart industrial PSS feasible? How can digital technologies contribute?