Dear Colleagues,

We are delighted to announce that the Book of Proceedings from the CAMOC annual conference Barcelona 2021 is now available to read online. The “Connecting cities, connecting citizens. Towards a shared sustainability” was the main theme of the conference. You can find 17 original articles in the Barcelona Book of Proceedings. In addition to the articles published in this book, we invite you to find the whole conference recordings on CAMOC’s YouTube channel.