Delivery Hero has confirmed Uber's €33-per-share takeover offer, valuing it at ~$11bn, just as DoorDash explores its own bid and the CEO prepares to step down.

Uber is exploring a full acquisition of Delivery Hero after increasing its stake to 19.5%, becoming the German company's largest shareholder.

"The Company remains fully focused on executing its strategic review process."

Delivery Hero said last week its U.S. rival had increased its holding to about 19.5% of issued capital from roughly 7%, becoming its largest shareholder. The stake is worth…