As noted, Sting signed a multi-year deal with AEW as he made his promotional debut on Dynamite.
Dave Meltzer noted on Wrestling Observer Radio that Sting will make regular appearances on Dynamite as he’s “not like WWE where he’d show up once every year.”
Sting will not be taking any bumps, but anything physical he does, it will be done safely. Also, his debut was timed so that it would happen right before Christmas in order to sell merchandise TV.