The DMCA, or Digital Millennium Copyright Act, is a 1998 U.S. law that updates copyright for the digital age, balancing copyright holder rights with internet user realities by protecting digital content, criminalizing anti-circumvention tech (DRM), and offering "safe harbor" to Online Providers (OSPs) for user-uploaded content if they follow takedown procedures, like the famous DMCA Takedown notice process for removing infringing material.