GMail for Business

I've just discover that i have new option in my Gmail when i turn the language to English.

It's the "Send Mail as" possibility.



What's the meaning for this simple option for a company? With this, a company could buy a domain name (.com identity) and also use a powerful mail tool to manage e-mails.

What's the meaning for Gmail users? They can send mails with other personnal mail identity. Gmail could be a centered place to send and receive your mails.