Slack Technologies, Inc operates a business technology software platform that brings together people, applications, and data and sells its offering under a software-as-a-service model. The Company offers Slack, a team communication tool that consists of a set of open, documented application programming interface (APIs), developer tools, and an App Directory that lists apps that have met the guidelines. Organizations on Slack use its platform to create internal applications and integrations, ranging from simple notifications to complex internal workflows. Third-party developers build integrations and applications that make it easier for their existing customers to engage with their products as well as find new customers. Slack is a layer of the business technology, where people work together connect all their other software tools and services and find the information they need.