Definitely not a "good talk/blog post/video course" type of thing, however if you are interested on how we built Countly from ground up, together with the techn

Definitely not a "good talk/blog post/video course" type of thing, however if you are interested on how we built Countly from ground up, together with the technology stack behind, you can check our source code here: https://github.com/countly/countly-server https://github.com/countly/countly-server While we have used MongoDB, Nodejs, Linux as underlying platforms, there are several options out there you may check. Note that some (if not most) of the effort would go into SDK development, and to tell you the truth, SDK development is no easy task as it requires knowledge of how different platforms work. The point is (and take it as a warning): you will never be satisfied with what you have - after you are done with vital data, then there is custom events, raw data, user profiles, online users, and then you will start eating your own dog food as it becomes your part-time job.