Twilio has introduced a new service called Conversations, which enables businesses to use cross-channel conversations to build long-lasting customer relationships. The service supports any combination of web or in-app chat, SMS, MMS, and WhatsApp, allowing customers to communicate with businesses on their preferred platform. With Conversations, businesses can manage multiple participants, add or remove users, and retain message archives for as long as needed, reducing the need to build complex infrastructure. This new service is expected to reduce development time from three-to-six months to just three weeks, making it easier for developers to get started with conversational messaging applications.