**Preface to "Circular Economy and Sustainable Business Performance Management"**

Today, more than ever, the world needs to be considered a finite and limited system, characterised by scarce resources and as a place where restocking is not possible in an infinite way. As such, careful resource management needs to be planned and set by the concurrent actions of heterogeneous stakeholders, from policymakers up to academics and practitioners, to effectively implement a circular economy. The different resources involved along the extended product lifecycle need to be adequately managed through innovative business models and design practises, coupled with reverse logistics and digital technology adoption, while methods and ways to measure and assess circularity performance are also needed.

This reprint highlights new opportunities and challenges for the Circular Economy and Sustainable Business Performance Management, focusing on technological advancements and management initiatives, including public-private partnerships between stakeholders.

The contributions gathered in this reprint are addressed to a wide spectrum of stakeholders. They are dedicated to academics who want to explore the research domain of performance measurements of Circular Economy systems, bolstering them in the development and application of new methods, models, and tools capable of easing and enhancing the activities needed to be performed to successfully measure circular and sustainable solutions supported by digital technologies. In addition, the reprint can also be useful for technology users and providers who would like to understand which technologies are most suitable to bolster Circular Economy performance measurement practises (given the tight bond between the Circular Economy and Industry 4.0 paradigms). This collection of contributions could constitute a guide for companies to lead their businesses towards a fair transition towards the Circular Economy, enabling them to measure circular operations under a data-driven circular manufacturing approach. Finally, it can be useful to policymakers, who should bolster companies and academics with practical actions and support the adoption of tailored solutions to compel them towards the total embracement, application, measurement, and control of the Circular Economy.

Editors would like to sincerely thank Mr. Samuel Li (Section Managing Editor of Sustainability MDPI) for his continuous, effective, and dedicated support both during the Special Issue time-lapse and the related editorial and reprint development.

> **Claudio Sassanelli and Sergio Terzi** *Editors*
