Evolution of identity protocols
In this chapter, we are going to cover how authentication has evolved, the different authentication protocols that were used in the past, and what we are using now. Not much code is going to be shown in this chapter, but for newcomers in the identity field, this will give you some more context about how we got here, what the shortcomings are of older technologies, and how we got to where we are now.
The identity landscape, as we currently know it, is the result of a couple of decades of protocols and technologies evolving to address the needs of application architectures.
Older technologies, such as passwords and integrated authentication, still play a key role in enabling modern scenarios such as SSO from a mobile application or accessing an OAuth 2.0-protected web API in Azure AD.
Many of the protocols and standards that are going to be covered in this chapter are still heavily used in the market. For this reason, it is important to cover...
