A team is a group of people gathered to get something done.
Teams are made up of channels, which are the conversations you have with your teammates. Each channel is dedicated to a specific topic, department, or project.
For example, the IT team has “General”, “apic.org improvements”, and 12 more channels. All the conversations, meetings, files, and apps in the “apic.org improvement” channel have to do with this project, and everything in this channel is visible to everyone on the IT team.
Channels are where the work actually gets done—where text, audio, and video conversations open to the whole team happen, where files are shared, and where apps are added.
While channel conversations are public and accessible by your teammates, chats are just between you and someone else (or a group of people). Think of them like instant messages in Skype for Business or other messaging apps.