[gls2ro]

You are connecting the dots backwards, but a project is usually trying to connect the dots forward.

So if you have a lot of money then you can start implementing from scratch your own web framework in C. It will be the perfect framework for your own product and you can put 50 dev/sec/ops/* on the team to make sure both the framework and product code are written.

But some (probably most) products are started with 1-2 people trying to find product market fit or whatever name is for solving a real problem for paying users as fast as they can. And then delegate scaling for when money are going in.

This is similar because this is about a startup/product bought by Microsoft and not built inhouse.

For fast delivery of stable secure code for web apps Rails is a perfect fit. I am not saying the only one but there are not that many offering the stability and batteries included to deliver with a small team a web app that can scale to product market fit while keeping the team small.