Block, Inc. is a financial technology company founded in 2009 by Jack Dorsey and Jim McKelvey. It is best known for its mobile payment platform, Square, which allows businesses to accept card payments using a smartphone or tablet. The company has expanded its services to include point-of-sale systems, online payment processing, and financial management tools for small businesses. In addition to Square, Block, Inc. has ventured into other areas, such as cryptocurrency through its Cash App, which enables users to buy, sell, and hold Bitcoin. The company aims to empower individuals and businesses by providing accessible financial services and innovative technology solutions.