Research on Internet: Find information regarding speech-platforms (like nuance, amazon echo, google, siri etc)

1. A list of all relevant(!) speech-recognision services that exist in this world. 1. for each of them a list of customers who use the service or integrate them in their product somehow (like names of car manufacturers and so) 2. for each of them a rough idea about how many users (end users) or clients (middle users like a car manufacturer selling a version of the product) that the service has 3. Not only the big services like amazon, google 2. Imagine you are a big news company. You have a lot of articles that are tagged with keywords 1. you want to use speech services to let as any people as possible search and hear your news 2. which service would you use? 3. How would you do it? (An open question to you)