My company has extensive experience with AWS.

In comparison to other solutions offering similar functionalities, I can say that I have not found any issues with Google App Engine. Google App Engine is at par with the best solutions in the market.

I think the major difference between Google App Engine and every other similar product is its management. It's easier to manage App Engine than many of the other platforms that I've used. Google did a good job in terms of building a user interface so you can easily explain it to a non-technical person. It's just that the use case is very, very limited. Apart from web apps, you can't run other specialized applications on App Engine. 

If you're building a multi-threaded application on App Engine it's very tricky. For multi-threaded applications, I would go for something much more robust like Cloud Run or Cloud GKE, not App Engine.

I didn’t have a previous solution. This was my first option, due to it being the only one with a real free tier.

I have not used another solution previous to this.