Our only infrastructure are VoIP servers.
The infrastructure is not different than Spotify's. It's all just servers.
The service you provide to the customer is use of your VoIP infrastructure. That's what they pay for.
In the case of Spotify, the service is not access to infrastructure. It is access to digital goods in the form of licensed music files.
Our only infrastructure are VoIP servers.
The infrastructure is not different than Spotify's. It's all just servers.