A couple of big changes to AOL this morning. Arthur Minson, COO of the company, is stepping down from his role, and Susan Lyne has been named CEO of AOL’s Brand Group.

Minson was named CFO of the company in 2009, then was promoted to COO last summer. Minson will remain at AOL, but it’s uncertain for how long. “Artie has played a key role in the turnaround of AOL and that will continue in 2013 during the transition period,” said Tim Armstrong, CEO of AOL, in a statement.”

Lyne was most recently chairman and CEO of Gilt Groupe. In her new role she will oversee a variety of brands, including TechCrunch and Engadget. Arianna Huffington will of course continue to run The Huffington Post.