Coinbase is a digital currency exchange headquartered in San Francisco, California. It allows users to buy, sell, and store digital assets such as Bitcoin, Ethereum, Litecoin, and many others. The platform was founded in 2012 and it's considered one of the most popular and user-friendly options for buying and selling digital currency.

Coinbase offers a variety of services to its users, including a digital wallet for storing and managing digital assets, a trading platform for buying and selling digital assets, and a suite of developer tools for building decentralized applications. It also offers a feature called Coinbase Pro which is a more advanced trading platform for experienced traders, it offers more trading pairs and features.

Coinbase is known for its security, compliance, and regulatory measures, it's licensed by FinCEN as a Money Service Business and it's also registered with FinCEN as a Money Transmitter.

The company has also grown significantly, it went public on April 14, 2021, becoming the first major cryptocurrency exchange to go public on the Nasdaq stock exchange.