What is alexa?

Alexa is a virtual assistant technology that people can purchase for use in their homes.  It was created by Amazon back in 2013, and it responds like a human to human questions.  It can order items from Amazon, and can also be used for home automation.  Many widgets created can connect to the Alexa to extend the functionality of what Alexa can do.  Alexa has fun entertainment features like story telling, singing, and telling jokes.