What are teams?

To collaborate with your friends, family, or colleagues across multiple Trello Boards, boards are part of a team. You can think about those teams as “workspaces”, be them a business workspace, a home workspace, or a bookclub workspace.

There are no limits to the number of members you can have in a team or the number of teams you can belong to in a single account.

How should I set up my teams?

There are different ways you can approach your own organization with teams, and there is no right or wrong way to do things. With that said, we often see teams being used to keep together boards that are related to the same subject or workflow, or even to keep all boards that are important to the same group of people, regardless of the subject.

The team provides a helpful way to see all of your boards and collaborate with all of your members in one place. We usually recommend that teams encompass a group, or a company, rather than a single project—projects are best handled as a board or multiple boards.
For free teams (those that haven't upgraded to Business Class), all team members are equal, which means that everybody can invite other members to join the team, edit the Team profile and change some settings of this collaboration space you all share.
Being a free team admin doesn't give admin control over team boards—to make changes to other users' boards in your team, you'll need to be invited as a board admin manually. Instead, the main benefit for teams at that level is to keep everything in one place in the app—team-visible boards can all be seen on one page, which is helpful for new team members. 
For Business Class teams, team admins also have admin control over any board in the team itself, without needing to be invited by the board's admin.
Upgrading to Business Class will give team admins control over boards in that team, as well.

Should I have multiple teams for my company?

If you're a large organization with multiple, discrete business units, setting up separate teams may be a good option. You'll also want to check out our Enterprise plan if you're considering purchasing a company-wide Trello subscription.

If you're simply looking for a way to group boards together, we would recommend using a single team and then using board Collections to organize them. Board collections are a feature of  Business Class, which you can read about here

If you decide to upgrade to Business Class, It's much easier (and more cost-effective) to upgrade a single team to Business Class than to have to upgrade multiple teams.

Upgrading to Business Class

Business Class upgrade happens per-team, rather than per-individual-account, which is why we suggest trying to organize your boards and members into a single team. Business Class provides lots of additional features, such as integrations with other services, collections, and a host of features to make it easier to manage your team.

If you do need to maintain several teams for your company, you may be interested in our  Enterprise plan. One of the features of Enterprise is that you only pay one time for each unique member, regardless of how many teams they belong to. More information about that plan is covered on that page.