Thank you for purchasing the MEAP for OpenID Connect in Action. In this book you will learn everything you need to know about OpenID Connect, and we don’t expect you to know about anything other than OpenID Connect is being used for login.
When I joined WSO2 in 2007, my first task was to implement OpenID support to the open source Identity Server, which was called Identity Solution those days. Couple of years later, in 2009, we had a large-scale deployment of Identity Server as an OpenID provider in Saudi Arabia over a 4 million user base. That was my first hands on experience with OpenID.
OpenID was the predecessor of OpenID Connect. Later I also implemented OAuth 1.0 support, and some part of the OAuth 2.0 support in the Identity Server product. When OpenID Connect became mainstream, we added the OpenID Connect support to the Identity Server.