Office 365 Developer Program FAQ | Microsoft Docs

As a vendor working at Microsoft, do I qualify for a subscription?Yes, you can follow these instructions to join the Office 365 Developer Program and set up an Office 365 developer subscription.What’s included in the Office 365 developer subscription?Exchange Online (Plan 2)Flow for Office 365 Plan 2Microsoft Forms (Plan E5)Microsoft PlannerMicrosoft Stream for O365 E5 SKUMicrosoft TeamsMobile Device Management for Office 365Office 365 ProPlusPowerApps for Office 365 Plan 2SharePoint Online for DeveloperSkype for Business Online (Plan 2)SwayTo-Do (Plan 3)

Source: Office 365 Developer Program FAQ | Microsoft Docs