Microsoft Teams Events Attendee Pack - subscription license (1 month) - 20000 attendees

Teams Attendee Packs are add-on licenses for Teams Enterprise that let event organizers host events for more attendees. An attendee pack determines the maximum capacity an organizer can set for a Teams event. The attendee limit is based on the number of attendees currently in the event at the same time. If attendees leave, other attendees can join until that limit is reached.