History of Open Source Identity Management (part 2)

See the full post here ➡️ https://ubuntu.com//blog/history-of-open-source-identity-management-part-2

Excerpt below:

This is the second blog post (part 1 available here) where we look at the history of open source identity management. This post focuses on Oauth and OpenID, the protocols currently used in modern applications and services.

This post does not cover the technical details of the open source identity management standards, which are explained very well in this Okta blog post. Rather, it explains the origins of Oauth and OpenID, and provides insights on the context that led to their creation.

Towards modern open source identity management

As we wrote in the previous article, in the late 1990s and early 2000s, identity management was widely believed to be a solved problem. However, two computing trends quickly challenged that common belief:

REST – In 2000, Roy Fielding led the basis for REST APIs in his dissertationArchitectural Styles and the Design of Network-based Software Architectures. It provided one of the key architectural patterns still used to this date.Mobile phones – The popularity of Blackberry, Windows Mobile, Palm, Symbian and later iOS and Android was increasing year by year, forever changing the way people consume information.

In both cases, the existing identity and access management frameworks were unfit, and required relatively complex implementations with high operational costs. This led to a number of new standards being developed by small and large companies alike, and eventually  the two described below.


The OpenID protocol was initially developed in 2005 by Brian Fizpatrick under the name of Yadis (the original post is


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