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Build Contextual Apps

  1. Build apps that extend the familiar Office and Office 365 experience across desktop, web, and mobile platforms.
  2. Surface your services and data in the most widely-used productivity platform on the planet.

  3. Sell your apps in 147 international markets or deploy to your organization.


    Start building Office 365 apps today

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Integrate with Office 365 APIs

  1. Build custom solutions across all mobile, web and desktop platforms that connect to Office 365.

  2. Connect securely to Office 365 APIs to access email, files, calendar, and people information, and the petabytes of data that are stored there.

  3. Use industry open standards such as OAuth and OData.


    Start building on Office 365 today

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Leverage your Skills and Tools

  1. Build using any web language including JavaScript, HTML5, Python, Ruby, PHP, and ASP.NET.
  2. Use Visual Studio or the IDE of your choice.
  3. Host your apps in Microsoft Azure or the cloud platform of your choice.


    Start building on Office 365 today

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