It's a file sharing protocol closely related to protocols like BitTorrent (https://ipfs.io/) a peer-to-peer filestore where you can host/seed files for others to use
We deal in an absolute maelstrom of acronyms. Being explicit when using them for the first time in a document is part of the social contract.
The customer does not care about the tech that much, they care about the value. The value is censorship-resistant and decentralized websites.