Introduction

The tendency to create value in a sustainable way assumed a relevant role in the strategies of companies that aim to achieve high-quality performance while respecting natural resources. Different challenges, with a focus on people, the planet, prosperity, and collaboration, represent goals to achieve in order to improve people's way of life. The change should start from individuals, and therefore from companies, which represent the fulcrum of global growth. In particular, in 2015 the world further confirmed its commitment with the 2030 Agenda for Sustainable Development, which represents an action program for people, the planet, and prosperity aimed at improving life and individual well-being. Reducing poverty in all its forms and dimensions, including extreme poverty, is the biggest global challenge and a prerequisite for sustainable development. The sustainable bioeconomy strategy represents the renewable segment of the circular economy and assumes a fundamental role in this context. In particular, its implementation would allow us to turn bio-waste and discards into precious resources. According to the European Commission, this strategy would impact the value creation process in several aspects regarding modernization and innovation, food security, clean energy, climate change, healthy ecosystems, job creation, mobilization of public and private stakeholders, environmental performance information, and renewable resources. Therefore, a circular development strategy could lead to relevant economic and sustainable gains. However, it is fundamental to adapt a strategic and systemic approach to the deployment of innovations in order to fully utilize the environmental, social, and economic advantages of the bioeconomy and sustainable implementation.

In this context, a relevant role is played by a strategic tool that allows integration of sustainability dimensions and a performance management system (PMS), in order to incorporate all sustainability goals into a company's strategy. Particularly relevant are issues concerning the creation of sustainable value, which are only partially reflected in economic transactions, although they have become increasingly important for today's businesses.

The growing attention to sustainability issues drives companies to integrate objectives of all three dimensions into their strategy. The effort to integrate sustainability and strategy is growing constantly, but it is not always intuitive. With regard to key performance indicators (KPIs), numerous studies have explored sustainability KPIs and investigated their usefulness. However, as far as we know, the literature does not provide an updated review on the subject selecting the most relevant KPIs that are useful for evaluating a firm's sustainability value. In addition, these studies do not provide exhaustive evidence from managerial practices.
In this context, the aim of our study is to identify a suitable set of KPIs to manage sustainability issues, and to identify a way to make selected KPIs an integral part of a company's strategy. To this end, we devoted our attention to two main research questions:

(1) What is the set of KPIs that best represent all facets of sustainability dimensions?

(2) How do we integrate sustainability dimensions into the strategy of the company?

Accordingly, with regard to the first question, we analyzed the literature to identify a comprehensive set of KPIs that can help managers develop performance strategies in terms of sustainability and conducted a systematic literature review (SLR). We analyzed all papers obtained in depth and selected all KPIs connected to our research question. Moreover, we analyzed the sample of papers by using bibliometric software, which provided interesting descriptive statistics related to the keywords and citations. In addition, we conducted a survey of Italian managers considering a practical point of view based on their experience.

With regard to the second question, based on the interviews with managers, we discussed potential solutions and surmised that an additional sustainability perspective based on the Sustainability Balanced Scorecard (SBSC) framework would be particularly efficient at driving companies toward integrating sustainability dimensions into their strategies.

Our paper contributes to the literature in several ways. First, our research adds to the existing literature because it allows us to standardize a comprehensive set of KPIs connected to sustainability dimensions and provide an updated literature review on the subject. In addition, we provide a practical point of view based on management experience. Lastly, results suggest that considering the new perspective makes it possible to build a new model to integrate strategy with environmental, social, and economic issues.

In the next sections, we summarize the prior research findings, then describe our research methodology and discuss our findings. We finally draw main conclusions from our work and we propose suggestion for future research.