CEX.IO is a cryptocurrency exchange that's been operating since 2013, making it one of Europe's older players in the digital asset space. The platform lets users buy, sell, and trade Bitcoin, Ethereum, and a growing roster of altcoins through a web interface and mobile app. It's positioned itself as a regulated exchange with fiat on-ramps, meaning you can fund your account with euros or other currencies through bank transfers and cards, then move into crypto—a crucial bridge that separates real exchanges from purely peer-to-peer platforms. The company operates across multiple jurisdictions and maintains compliance frameworks that matter to retail traders in Europe who want institutional-grade infrastructure without the complexity of decentralized exchanges. CEX.IO doesn't reinvent fintech architecture; instead, it focuses on being reliable, regulated, and accessible for mainstream users discovering cryptocurrency. In the fragmented European crypto landscape, where regulation remains patchy and trust is everything, CEX.IO represents the pragmatic middle ground between full decentralization and traditional finance's gatekeeping.