Microsoft announced plans on Monday to start offering Windows 10 and Office together in a single subscription service. Microsoft 365, as the service is known, will also include security and management tools and come in two flavors: one for large enterprises and the other for small-to-medium businesses.

Pricing TBD: The company didn't say how much it will charge for either version of the service.

Worth noting: Microsoft was once in big antitrust trouble for including a browser with Windows never mind selling Windows and Office together.

Why it matters: Microsoft has already been moving more of its products from one-time purchases to subscriptions and Microsoft 365 helps take this further.