Chris Eldredge from The Motley Fool has a detailed write up on how they've used Octopus to deploy over 1,405 releases from 48 projects:
Because of the level of automation we integrated with Octopus, our business is able to deploy software more frequently and more reliably than ever before. In the coming months and years, we look forward to seeing improvements in Octopus features that will help us with cloud deployments to AWS or Azure. Octopus has definitely filled a gap in our deployment capabilities, allowing us to deliver value to our business quickly, iteratively and predictably.
It's a worthwhile read, especially the parts about how they achieve reuse of their PowerShell scripts for deploying so many different applications.