Twilio is a customer engagement platform that enables more than 140 billion messages to be sent and received every year, with millions of developers turning to Twilio for critical communications. The platform offers extensive documentation, sample use cases, walkthroughs, and tutorials to help developers get started. To find technical help, developers can work with a Twilio Consulting Partner, contract with or hire a developer, or learn to code on Twilio. The platform also provides Professional Services to guide developers through the planning stage to implementation and onboarding. Developers must sign up for a free trial account, upgrade their account, and fund it before they can start sending messages. They must select the best sender or phone number for their use case, send messages to consumers in North America, and comply with regulatory requirements such as the Telephone Consumer Protection Act (TCPA) and the CTIA Messaging Principles & Best Practices. By following Twilio's guidelines and resources, developers can build successful messaging applications.