Square provides a unified commerce platform that enables businesses to accept payments in person and online, run point-of-sale systems, manage staff and appointments, and track sales and inventory. The platform combines payment processing, hardware (card readers and registers), software modules (POS, online store, invoicing, payroll, appointments), and analytics to simplify operations and accelerate cash flow. Square's value comes from integrating payments with business tools and reporting so merchants can operate with a single vendor and consistent data across channels.