Zsot Varga explains how Prerender saved $800k annually by removing their reliance on AWS and building in-house infrastructure to handle traffic and cached data. This was no minor migration, and it took months to pull off, but it’s a solid lesson in testing your assumptions.

The cloud (which is AWS in most cases) is the default for most businesses today. That’s a good starting place for many reasons, but once you get up and going you may find it’s not the best choice for your business, like the folks at Prerender learned.