Team composition is the people that make up a team. This includes the number of people and the kind of skills the people have. It is important to have the right mix of people on a team so that everyone can bring something different to the table and help the team succeed. For example, if a team is trying to build a website, it might need someone with a good design eye, someone with technical skills to build the website, and someone who can understand the business needs of the site. Different kinds of people with different skills will be able to help the team work together and create something great.