The talk at the FOSDEM conference in 2023 was about tackling document collaboration challenges. The speaker discussed the importance of security, collaboration, usability, and flexibility in document collaboration. They also highlighted the updates and features in OnlyOffice since the last FOSDEM conference, including data security measures, the introduction of online forms for document automation, improved collaboration features such as live viewer and co-editing, enhanced usability with dark mode and ligatures, and integration with various platforms and plugins. The speaker also mentioned the availability of OnlyOffice in different formats and packages and the growth of their team and office locations. The Q&A session addressed topics such as success stories of organizations migrating from Microsoft tools to OnlyOffice and support for the Vopi protocol.