“Epic Games now has over 500 million accounts with 2.7 billion friend connections across Fortnite, Rocket League, and the Epic Games Store. All of this is supported by Epic Online Services, a set of online services originally built for Fortnite and now available to all creators for free so they can easily launch, operate, and scale their games using any engine, store or platform of their choice.”
Source: N4G PC Epic Online Services Launches Free In-Game Voice and Easy Anti-Cheat