Google's Dialogflow Enterprise Edition is now generally available. Since the API-based development suite was acquired, and then renamed, from API.AI, it has remained in beta. Now, generally available, developers can use the tools to build conversational interfaces across many platforms.
Twilio has announced the Twilio API for WhatsApp which allows developers to integrate with applications nearly every messaging channel via one Twilio Messaging API. Among the messaging channels the API supports are SMS, MMS, Facebook Messenger, RCS, LINE and the newly added API for WhatsApp.
Earlier this year Sendbird announced the Sendbird Calls API to add platform support for voice and video capabilities over IP. Since that time the company had been updating the API and has now announced a new self-service option for the Sendbird Calls APIs.