Square

Leading payment processing and commerce platform for small to medium-sized businesses

Square, now operating as a subsidiary of Block, Inc. (formerly Square, Inc.), is a comprehensive financial services and merchant services platform that revolutionized payment processing for small businesses. Founded by Jack Dorsey and Jim McKenna, Square initially gained prominence with its iconic white card reader that transformed smartphones and tablets into payment terminals. The company has since evolved into a full-service commerce ecosystem offering point-of-sale hardware and software, payment processing, business analytics, inventory management, and financial services including Square Capital for business loans and Square Banking. While Square is not a traditional AdTech company, it operates within the broader commerce technology ecosystem and provides merchant services that intersect with digital commerce and marketing. The platform enables businesses to accept payments across multiple channels, manage customer relationships, and access business insights that inform marketing and sales strategies. Square's ecosystem includes products like Square for Retail, Square for Restaurants, and Square Online for e-commerce, serving millions of sellers worldwide. In 2021, Square, Inc. rebranded its corporate entity to Block, Inc. to distinguish the corporate entity from its business units, which include Square (seller-focused services), Cash App (consumer financial services), and other ventures. Square continues to operate as a distinct brand and product line under the Block umbrella, maintaining its position as a leading payment and commerce platform for small and medium-sized businesses globally.