The concept is of creating a decentralized web which consists of 'nodes' which would host content. The users who lease their computers for the same would earn in Substratum coins. This would be built as a platform which can be used across Mac, Win, Android or any other realm; and with developer tools making it easy for even a noob to kick off activity on Day 1.
Web Hosting (money, space, speed, latency, uptime) -> replaced with substratum nodes
Pay with one atom/one substrate for one micro transaction. Hence you pay per use
Substratum uses advanced compression techniques, geo-locating techniques etc and hence content would be delivered faster; and transfers and always P2P
Substratum would have AI enabled DNS where for a particular request name, say, 'richie.com', the IP address and the geolocation and the closest available substratumNode to serve the request.
White paper reference:
https://substratum.net/wp-content/uploads/2017/12/Substratum-Whitepaper-English.pdf