Twilio, Inc. engages in the development of communications software, cloud-based platforms, and services. The company is headquartered in San Francisco, California and currently employs 5,535 full-time employees. The company went IPO on 2016-06-23. Its platform provides developers with tools to build, scale, and deploy real-time communications within software applications. Its segments include Twilio Communications (Communications) and Twilio Segment (Segment). The Communications segment consists of a variety of application programming interfaces (APIs) and software solutions to optimize communications between its customers and their end users. Its key offerings in its Communications segment include Messaging, Voice, Email (includes Marketing Campaigns), Flex and User Authentication and Identity. Its Twilio Flex is a digital engagement center for the entire customer journey. Twilio Segment is a customer data platform that provides businesses with the tools to harness the power of contextual data by unifying real-time information collected throughout each customer’s journey into a profile.