which parts? It's a distributed discovery mechanism for relays. So apps don't have to hardcode choices or avoid helping users select relays. We are starting to add more classification for relays so for example if you tag your relays with Discovery, or Algo, or.. things like are in this list here: https://github.com/nostr-protocol/nips/issues/1282

then they will be discoverable with indexed tag search by any client looking for some relays.