Global missions are a new feature in Pokémon Sun and Moon, and the first of them started today. The objective: catch a collective 100 million Pokémon in 14 days.
If the goal is reached, every participant will get 1000 Festival coins, but even if the community falls short, the participants will still receive a 100 coin consolation prize.
If you want to be a part of it, be sure to use the GlobalSync feature by the end of the challenge period, December 13th. You can read the announcement post here.