In this chapter, we learned about the WS (web service) plugin and the API exposed through it. We have also seen how to access a user's data from service providers using OpenID and OAuth 1.0a (since most service providers use either 1.0a or 2.0), with the help of the OpenID and OAuth APIs in Play.

In the next chapter, we will see how some of the modules provided by Play work and how we can build a custom module using them.