Seasons provide opportunities for additional progression and rewards once you reach Level 40 and complete the Warlords of New York campaign.
Each Season lasts three months and sends you on a new manhunt, which will reward you with a skill mod once completed.
To challenge yourself and keep your skills sharp, you can also take part in Global Events and Leagues.
You can read more about Seasons on The Division 2 website.
Feel free to get in touch if you have any additional questions.