In this chapter, we covered what OAuth is and how to integrate different varieties of OAuth with our application. We also covered Facebook, Twitter, Google, and LinkedIn strategies provided by passport.js. If you want to explore a different strategy, a good list of available packages is available at https://github.com/jaredhanson/passport/wiki/Strategies.
In the next chapter, we will find out more about what Vuex is and how can we use Vuex to simplify our application.