Payment processing, point of sale, invoicing, and business management tools. Square offers enterprise-grade APIs and comprehensive documentation for seamless integration into your platform. The service is trusted by leading companies worldwide and provides reliable uptime, dedicated support, and scalable infrastructure to meet growing business needs. Integration typically requires 1 week with low complexity. Founded in 2009 and headquartered in San Francisco, US, Square serves customers across US, Canada, UK, AU, JP with a proven track record of excellence.