Sweet! JChris of Grabb.it has already wired up an alternate implementation of Google App Engine. You can apparently with little to no effort take an AppSpot (Google App Engine’s hosting site) application, and instead upload it to AppDrop, which runs in Amazon’s EC2 cloud infrastructure. Very nice!

It’s pretty quick and dirty, so I expect that it’s as much proof of concept that AppSpot isn’t making lock-in inevitable as anything else…but regardless, it’s still a great development. And the speed at which it occurred suggests to me it won’t be the last implementation…