A similar success story, albeit a bit earlier in the hype cycle, is Realm. They started with an lightweight db engine for embedded systems named TightDB. Getti

A similar success story, albeit a bit earlier in the hype cycle, is Realm. They started with an lightweight db engine for embedded systems named TightDB. Getting traction in that space is hard, so they pivoted to become a „mobile database“, taking a page out of the MongoDB playbook - they built a slick wrapper for iOS and Android to make it extremely simple to get started - they wrote a fantastic set of tutorials to get started quickly - they started doing lots of events to grow their community And they‘ve succeeded to get quite a lot of companies to use their product — by making something that is fun to use for developers (at least in the beginning)