Microsoft Stream is part of the Microsoft Office 365 suite of tools. It is designed to be a way of sharing video content across an organization.The admin page for a MS Stream video
Why would you want to use Stream instead of, say, YouTube, GDrive, or some other media distribution method? Good question – it is important to understand Stream’s capabilities and limitations:
Stream is part of the MS Office suite of tools. You need a campus login to access it. This includes viewing, so you won’t be able to share Stream videos outside of the campus community.
Microsoft page on "New" Stream features coming: https://docs.microsoft.com/en-us/stream/streamnew/new-stream
Your screen may look different, it depends on which apps are turned on for you. If Stream is turned on for you, you will see it in your list of apps, as you can see to the left.