How do you get a concierge key on American Airlines?

American Airlines has a frequent flyer program that is acknowledged as AAdvantage. On top of that, a member earning miles in a year increases their tier status and enhances their amenities. Further, above all that membership tier, the American Airlines Conciergekey is the top-most level. Additionally, an airline member can only get to this status upon invitation, not by earning points. There is no such criterion, but it can be obtained at the discretion of the airline's specific spending on the overall flight frequency.