[siwyd]

Disclaimer: I work at a company that is both an Akamai and a Fastly client. I worked with Fastly first, then Akamai after. Opinions are my own and not the views of my employer.

There has definitely been a push to catch up, but I wouldn't say you're there yet. The Terraform provider for instance is not up to par with the Fastly one. Having attended an Akamai DevOps workshop not so long ago, there didn't seem to be an easy way to use the CLI tools to configure a property in an idempotent way in a CI/CD pipeline. Maybe things are different now.

Akamai has some advantages for enterprise customers though such as easy assignment of cost using the CP codes. That's very handy. The integration with Let's Encrypt is also very nice.

Fastly delivers in it's simplicity and documentation. Whatever use case you need, you'll most likely find it in their docs and on their blog. Being able to use VCL to configure your caching is in my opinion way easier (and with less limitations) than the Akamai rule tree (even if you don't have previous Varnish experience). Varnish's finite state machine makes it easy to configure and debug any kind of behavior you want. The Akamai rule tree has caused me quite a few 'WTF' moments. It's difficult to debug when something doesn't behave as expected and there's a certain amount of 'black magic' in the behaviors sometimes that makes it difficult to judge what the outcome will be.

The good thing is that both companies have different features and get pushed to incorporate features deemed useful by their customers at one or the other provider.