Integration is the lifeblood of retail environments. Distributed businesses with non homogeneous systems at the edges are unable to function without application integration. However, too many solutions are ill-suited to the needs of the retail industry. They attempt to retrofit heavy, centralized stacks of integration infrastructure for an industry that is fundamentally distributed in nature. This whitepaper discusses best practices for application integration in the retail industry and methods for using application integration, both for key existing business functions as well as revolutionary business transformation.