The Linux Foundation Open Source Summit is a conference umbrella, and includes a collection of events centred around open source.

The Summit will gather thousands of attendees from various professional backgrounds including developers, architects, community managers, students, and other open source enthusiasts.
The Summit is accessible both virtually and in-person in Dublin, Ireland on 13-16 September 2022. Attendees will have the opportunity to discuss with others, learn about the latest trends, discover the latest innovative projects, and expand their network.
Participation rates vary for the in-person option, while the virtual rate is standard. The full schedule will be announced on 7 July 2022, so keep an eye on the website for updates: https://events.linuxfoundation.org/open-source-summit-europe/
References
Spencer Dock, N Wall Quay, North Wall
Dublin 1, D01 T1W6, Ireland