How to build SEO friendly Single Page Applications?

What is AJAX?

AJAX stands for Asynchronous JavaScript and XML. It is made of a set of JavaScript APIs that allows website editors to make websites more dynamic, and permits to update the pages of a website without reloading them. In order to do so, JavaScript must be supported and activated in the user’s browser. The same goes for search engine bots like ones used By Google, Bing, etc but also social network bots.