Cloud9 has been a great partner to the Rails Tutorial, with their custom Rails Tutorial workspace allowing readers to spin up quickly at the beginning, while also maintaining state if they need to take a break. It's also enormously less overhead that downloading and installing a virtual machine.

There's no telling what this acquisition will bring, of course, but it's a good fit for AWS, so I'm optimistic that the service will continue uninterrupted. (Both the 3rd and 4th edition Rails Tutorial screencasts use Cloud9, so I sure hope so!)

Congratulations to Ruben and the rest of the Cloud9 team!