Planner is a service for managing simple projects. It comes as part of an Microsoft 365 subscription, and is reminiscent of tools like Jira or Trello. It is used to assign and track tasks within a team using the Kanban board interface, and is ideal for teams that manage task-based agile projects, where they can attach files, add comments, track progress through charts, etc.
The backbone of the Microsoft Teams service are teams and channels, which means participants in communication and places where information and files are exchanged and work is being done on joint projects. This text will describe the theoretical settings and basic principles of working with teams and channels, and in some of the following you will have the opportunity to get acquainted with the practical details.