This policy paper aims to improve understanding on how SMEs responded to the COVID-19 crisis and adapted to the new environment, and how different players in their ecosystems are contributing to their digital transition. The first part of the paper sets the scene on the digital transformation of SMEs, by providing an overview of key trends in SME uptake of digital technologies across OECD countries. The second part of the paper focuses on some of the main trends emerging from - or being strongly accelerated by - the COVID-19 crisis, including access to digital infrastructure, e-commerce and teleworking. The third and last section discusses international practices in SME digitalisation policies and presents original evidence from the “rescue” and “recovery” packages launched by OECD governments to face the crisis; as well as case studies and qualitative evidence from private-sector programme provided by partners of the Digital for SMEs Global Initiative (D4SME).