Buy Microsoft Volume License Keys (MAK) for Business. Multiple Activation Keys (MAK) let businesses and IT resellers activate dozens or hundreds of installations from a single key — no KMS server required. We carry MAK volume licenses for Windows 11, Windows 10, Office (2024, 2021, 2019, 2016), Visio, and Project, in tiers from 50 to 5,000+ activations. Ideal for IT departments, system integrators, and software resellers deploying licenses at scale, with instant digital delivery and genuine Microsoft activation.