Agree with Amy. Similar to a Customer Advisory Board, the ideal spot is under CMO/marketing to enable customer advocacy to have visibility and ensure collaboration from the start. I've also seen it under Customer Success, part of a CCO’s role, which works well especially if there is already a steady cadence between CS and Advocacy. Either can also help extend advocacy across customer organizations, with the exec sponsorship program feeding the advocacy program via relationships exec sponsors build and the teams their customer counterparts are responsible for. Plus, it enables exec sponsors to stay up to speed on their customers’ advocacy participation, not to mention that these likely are (or can be nurtured to be) the very execs most ideal to support and drive more strategic, executive-level advocacy. This is why no matter what part of the org runs exec sponsorship, connection to the advocacy team and properly educating/arming exec sponsors should be a priority.