I did not go through an evaluation process beforehand, mostly it was chosen by the organizations. I did evaluate other vendors on cost optimization to see whether switching to another vendor would improve cost.

I wanted to optimize the infrastructure to see whether the problem is with the way we use it or if Amazon itself is expensive. I was able to bring down the cost with some of the cleanups and saving plans they offer. 

We did look into other options before choosing EC2. 

I did not evaluate other options previously. 

For some services like API Gateway, we did look at some other options, however, the serverless architecture concept was new and not available as a stack with any other company at such a competitive price. Now Microsoft has also joined the concept, and while I have not used the Microsoft offering, based on my other experience with the .net platform, i think it may be a better platform.

We were using Google Cloud Platform before using Amazon AWS. We've also analyzed DigitalOcean and a Brazilian datacenter named Locaweb.

We also evaluated all of the other VM's.

No.