Connecting to AWS via Site-to-Site VPN

[Wyman]

Hi everyone. I've setup a VPN tunnel between our office and AWS but have now been asked to make the server on AWS accessible from our other sites via the main office tunnel. Our sites are all connected together in a meshed community. Is there a way of routing traffic over a site-to-site VPN then onto the AWS tunnel? I didn't think it was possible...

[PhoneBoy]

In general, yes, since it’s just another VPN tunnel being added to the mesh. 
The specifics would depend on how the rest of the VPN is configured.
You may also need to leverage IP Pool NAT as well depending on the situation.