Teams combines workplace chat, video meetings, file and screen sharing, integrating with Office 365 apps such as Word, OneDrive and SharePoint. Use Teams for a one-on-one ad hoc chat or for a meeting or chat with your team. With persistent chat features that preserve conversation history over time which is visible to both current and future participants. Teams can be used from your workstation, laptop or mobile device.
If you are using a COW or AV PC you will need to login to Teams as a separate process, Teams will not be automatically connected as it is on your own workstation. Until you have logged on to Teams you will not see your recent document history in the Office 365 apps such as Word, PowerPoint etc.