I think it's the same as many other services from Amazon. It's the fact that you don't have to maintain it yourself. You use their APIs and it works. I don't

I think it's the same as many other services from Amazon. It's the fact that you don't have to maintain it yourself. You use their APIs and it works. I don't know if you've ever tried to setup a search engine yourself but it can be a relative pain in the ass, especially if you want to do it at a large scale. This service provides a search engine that gets you up and going very fast, especially if you don't know how to do it. I haven't tried it yet but if it saves me time and it's relatively full featured, then I'm going to use it for sure.