Steam Store - Valve Developer Community

Some developers are ditching Steam in favor of the Epic Games Store

Steam Store - Valve Developer Community

Epic Games Store Exclusivity Controversy: Why People Are Freaking Out

Steam devs speak: Maximum profits for Valve, minimum responsibilities - Polygon

Steam Developer: Valve

Events, Library Overhaul Coming to Valve's Steam Store

Steam users react to divisive privacy changes

Valve overhauls the Steam Store with new categories, hubs and filtering

Steam, The Ultimate Online Game Platform

Developer And Publisher Homepages (Steamworks Documentation)

Free To Play Games (Steamworks Documentation)

A developer's guide to releasing a game on Steam

Portal 2: Community Edition on Steam