With the teams endpoint you can find all team details you need. You can think if information about when the team is founded, logo, team name, short name etc.
But especially by using the right includes you can have the right team details you need, like the team coach, team venues, results, upcoming games, team stats and many more valuable team details.
The squad include only returns the squad for the team of the active season in the domestic main league the team is playing in. For international teams it will return the teams as is.