Amazon Lex was opened to developers in April 2017. It involves natural language understanding technology combined with automatic speech recognition and had been introduced in November 2016.[40] Google provides the Actions on Google and Dialogflow platforms for developers to create "Actions" for Google Assistant[41] Apple provides SiriKit for developers to create extensions for Siri IBM's Watson, while sometimes spoken of as a virtual assistant is in fact an entire artificial intelligence platform and community powering some virtual assistants, chatbots. and many other types of solutions.[42][43]