What are teams?
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.
A Trello Team is required to use the Trello App for Slack.
How should I set up my teams?
There are different ways you can approach your own organization with teams, and there is no right 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.
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.