Five Million Users, One Forced Migration: What GLS Learned Rebuilding Customer Identity Under Pressure

Microsoft's transition from Entra B2C to Entra External ID is forcing many organizations to reassess their customer identity strategy.

At GLS, our customer identity platform serves more than five million users and was implemented under significant business and time pressure.

In this session, Matthias Wagner shares practical lessons learned from operating customer identity at scale, including governance challenges, operational realities, security considerations, and the strategic decisions organizations must now take when preparing for the next generation of customer identity platforms.