I've cruised by it a couple of times, but my workplace is already bought in on AWS. Code Commit has some nice integrations for CI / CD whereas I can't really make the case for Gitlab other than, "I like it more"
Positioning it more like:
- It will save us X amount of time on average
- Give us better security through IAM
- Reduces fragmentation across org software
sells a lot better to people with credit cards than, "I like it more"