New Office 365 Developer Program benefits for Visual Studio Subscribers!

Office 365 Developer Program now offers integrated benefits with Visual Studio Professional and Enterprise. Your paid subscription in both programs grants you a free renewable Office 365 Developer subscription with up to 25 users.
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New renewable Office 365 developer subscriptions launch on April 3rd

Office 365 developer program announces a new renewable developer subscription. On April 3rd, we moved to a new model that enables a perpetual renewal of your developer subscription. Now, you can get a free Office 365 developer subscription with 25 user licenses to use to build your solutions and it will remain active for as long as you’re actively developing and deploying solutions. No more rip and replace after one year.
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What’s New in App Studio – October 2018

Explore new features available now in Microsoft Teams App Studio in October 2018
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DevTools now accessible from the Microsoft Teams Desktop Client

You can now access browser DevTools on the Microsoft Teams desktop client (both Mac and Windows). Read this post for more information.
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Working with files in your Microsoft Teams bot (Preview)

We announced at Build 2018 that bots will soon be able to send and receive files. I’m happy to let you know that it’s finally here! If you have a Microsoft Teams app that works with files, it’s time to switch to Public Developer Preview and check it out.
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Microsoft Teams App Studio’s Control Library

If you’ve tried out our new Microsoft Teams App Studio you’ve probably noticed the “Control library” tab. We developed this library based on feedback from our developer community to simplify the design and development process. Each time we created a new tab we found ourselves copying the same CSS code repeatedly — as you can imagine there were several issues. To resolve these issues, we built a library for common UI elements used in Teams. Using this library will enable your tab to stay consistent with the Teams look and feel.
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Microsoft Teams App Studio (Preview)

Microsoft Teams is the hub for teamwork in Office 365 that integrates with the apps and services that people use to get work done together. Microsoft Teams App Studio (Preview) makes it easy to start creating or integrating your own service, whether you develop custom apps for your enterprise or SaaS applications for teams around the world.
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Microsoft Teams C# Sample App

We’ve heard you and we’ve delivered, the Microsoft Teams C# sample app is here! This sample app will give you all the tools you need to start developing for Microsoft Teams. The sample app has two goals: To show you different examples of how an app can integrate into Teams.To give you a starting point of patterns, examples, and tools that can be used as a template for creating a larger, scalable, enterprise-level bot to work within Teams.
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Authentication in Microsoft Teams Apps: Tabs

Some of the most common questions we receive from Microsoft Teams developers concern authentication to Azure Active Directory (Azure AD), single sign-on (SSO) to Azure AD, and how to access Microsoft Graph APIs from within a Microsoft Teams app. Here, we'll explain in detail how to do these things, going above and beyond authentication basics.
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