Checkout.com is a financial technology company that provides digital payment processing services for enterprise clients. Operating as a payment gateway, acquirer, and processor through a single API, it supports payments in more than 145 currencies with in-country acquiring, fraud filters, and reporting. The company was founded by Guillaume Pousaz, originally launching as Opus Payments in 2009 and rebranding as Checkout.com in 2012. It is headquartered in London, United Kingdom, with offices worldwide. Its platform is used by leading brands across e-commerce, technology, and media. The company processes billions of transactions annually.