Nowadays most web users have several user accounts. Thanks to OAuth 2.0 this is no longer necessary, since it allows for the delegation of rights and single sign-on scenarios in conjunction with OpenId Connect. In this session you will learn how to use this popular protocol – which is also supported by major players such as Google, Twitter and Facebook in JavaScript projects – whilst discovering for which scenarios it was designed and for which it is used nowadays, why authentication scenarios with OAuth 2.0 can be critical, and how OpenId Connect helps in such situations.