There is nothing more important for an IT professional than staying up to date and knowledgeable around the latest technologies. But that constant learning can take a toll on one’s psyche and wallet.

Online technology training service Pluralsight has acquired the Orlando, Fla.-based Code School, which offers dozens of instructional courses and videos for developers both online and via mobile apps.

Flush with cash and eager to consolidate, online education startups are racing one another to grow via acquisition as the market for professional training shifts to digital. The latest move in this ...