The ability to automate everything from application deployments at scale with simple API calls or scriptable CLI tools is very powerful! There are some features that require additional plugins/addons which I dislike but overall it's been great so far - we've seen significant productivity gains since implementing this solution in our environment (especially across multiple teams).
We use cycle Cloud as an automation platform between other services within AWS such as ECS clusters & Fargate containers deployed through CodeDeploy when needed.