eBay

eBay operates an online marketplace where consumers, entrepreneurs and businesses buy and sell goods across more than 190 markets. Its offerings span fashion, collectibles and vehicle parts. Magical Listing helps sellers create listings faster, while AI-powered card scanning helps collectors identify cards and understand pricing. Authenticity Guarantee provides authentication for eligible purchases, and Guaranteed Fit helps shoppers find compatible vehicle parts.

Founded by Pierre Omidyar in 1995, eBay is led by CEO Jamie Iannone. Its engineering work includes an internally developed vector similarity engine for matching listings by text and images and generating personalized recommendations from browsing behavior. Described in 2023, the distributed system uses HNSW and ScaNN search backends, with attribute filtering and near-real-time listing updates to support retrieval across a changing inventory.

The company reported 136 million active buyers at June 2026, counting buyer accounts that paid for a transaction during the preceding 12 months. In July 2026, eBay completed its acquisition of Depop from Etsy, adding a consumer-to-consumer fashion marketplace with a Gen Z and Millennial audience. It paid $1.4 billion in cash, including preliminary purchase-price adjustments subject to finalization.