The Microsoft 365 developer platform

Buy or build apps that tailor Microsoft 365 to the precise needs of your role, company, or industry – and are easy to deploy and manage on any device.

Find the right Microsoft 365 plan for your small and medium businesses

Let us help you find the best productivity suite for your business by answering six short questions.

Partner apps

Discover a wide variety of apps built by our Partners that are tailored to work with the Microsoft 365 products you already use. You’ll find innovative solutions that put pop in your presentations, enhance email management, power workflow design, simplify document control, and much more.

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Industry solutions

Learn how we’re partnering with experts in industries such as healthcare, education, and manufacturing to create solutions that harness the power of the Microsoft 365 platform to bring new ideas into traditional work spaces.

Customer-built solutions

Learn from examples that illustrate the value of solutions built by customers on the Microsoft 365 platform. If you’re a manager, an IT professional, or even a developer, you’ll find great ideas for how the Microsoft 365 platform can help you achieve more.

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Learn more about the Microsoft 365 platform

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"With Adobe Sign, your documents are secure in transit and in flight.... Being able to document-track is a huge win for us…. Having Adobe Sign be flexible enough to be a module part of SharePoint, all under one roof, has made [it] easy for us."

— Micah Hwang, Service Delivery Specialist, State of Hawaii

Discover more 3rd party apps

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Adobe Sign

Send a document for e-signature and track the status with the Microsoft preferred e-sign solution.

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Send messages later, track responses, schedule meetings, and more with the ultimate email productivity tool.

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Bring your docs & presentations to life in a click with legally cleared HD images, icons, and illustrations.

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Microsoft 365 gives you best-in-class productivity apps with intelligent cloud services that transform the way you work.