Amazon has formed a fund to back startups that could incorporate its Alexa voice technology, and has revealed its first seven investments.

E-commerce company Amazon launched a fund sized up to $100m yesterday that will support companies developing technology designed around the human voice.

The Alexa Fund, named after the cloud-based voice service Amazon uses in its Amazon Echo personal assistant device, will invest in voice-based technologies that use the self-service tools kit Alexa Skills Kit or its Alexa Voice Service software.

In particular, Alexa Fund will target hardware products that could make use of the Alexa voice interface, startups building features…