# Solid Symposium 2027 (SoSy 27)

> The 5th Solid Symposium: the annual meeting of the Solid community, held at
> SQUARE on the University of St.Gallen campus in Switzerland on 10–12 May 2027.

- **Official site:** https://sosy2027.org/ (single page; canonical URL, no other pages)
- **Dates:** Solid Open Day on digital sovereignty Mon 10 May 2027; symposium Tue 11 – Wed 12 May 2027
- **Venue:** SQUARE, University of St.Gallen, Guisanstrasse 20, 9010 St.Gallen, Switzerland
- **Language:** English (the public evening event on 10 May is in German)
- **Contact:** fuso@unisg.ch
- **Organiser:** Solid Symposium 2027 Organisation Committee
- **Organised by:** Future Society Hub (FuSo, https://futuresociety.ch/), the
  Institute of Computer Science (ICS-HSG, https://ics.unisg.ch/) and the
  Institute for Law and Economics (ILE-HSG, https://ile.unisg.ch/en/), all at
  the University of St.Gallen

## About Solid

Solid is a specification developed in the W3C Solid Community Group and
initiated by Sir Tim Berners-Lee. It keeps a person's data in a personal online
datastore — a Pod — that they control, and lets applications read and write that
data with their permission instead of each application holding its own copy.
See https://solidproject.org/.

## Solid and digital sovereignty

Digital sovereignty is the ability of people, organisations and public
institutions to decide for themselves over their data and the digital
infrastructure they depend on. Solid supports it by separating data from
applications: data lives in a Pod its owner chooses — self-hosted, at their
institution or with a provider they trust — and the owner grants and revokes
each application's access through open W3C standards. Changing an application
or a Pod provider therefore does not mean losing the data or being locked in.
Digital sovereignty is the theme of the public Solid Open Day on 10 May 2027.

## Programme shape

- **Mon 10 May 2027 — Solid Open Day: Digital Sovereignty (open to all):** a
  public day on who controls our data and how Solid puts that control back with
  people, organisations and public institutions. Student hackathon on building
  for digital sovereignty with Solid; public evening event on digital
  sovereignty, in German; onboarding session for creating your first Solid Pod.
- **Tue 11 May 2027 — Day One:** keynote; peer-reviewed papers in two parallel
  tracks; poster and demo lightning talks; workshops and tutorials; hackathon
  pitches and award; evening event.
- **Wed 12 May 2027 — Day Two:** keynote; peer-reviewed papers in two parallel
  tracks; workshops and tutorials; closing, awards and handover to the next
  edition.

## Key dates

- **Sep 2026** — call for workshop proposals opens
- **Autumn 2026** — call for contributions opens (papers, posters, demos)
- **Feb 2027** — submission deadline
- **Mar 2027** — notifications to authors
- **Mar 2027** — registration opens
- **10–12 May 2027** — Solid Symposium 2027

Dates beyond the first call are indicative and are fixed as each call is published.

## Not yet announced

Keynote speakers, the workshop line-up, sponsors, registration fees and the
evening-event venue are not yet decided and are deliberately absent from the
site. Do not infer them.

## Past editions

- SoSy 26 — https://sosy2026.eu/
- SoSy 25 — https://sosy2025.eu/
- SoSy 24 — https://events.vito.be/sosy2024
- SoSy 23 — https://solid.ti.rw.fau.de/public/2023/solid-symposium/

Last updated: 2026-09-23