Yeah. This is one place where startups have a distinct advantage over established firms. Established firms tend to have home-grown build and deployment systems, either because they started writing code before open source versions of those systems became available or because of straight up NIH. Startups, on the other hand, aren't big enough to tolerate that kind of wastefulness. They use as much open-source and standardized software as possible, simply because they don't have the time or manpower to write non-business code.