Lightning is an amazing technology complementing bitcoin because

A) it is super fast (less than 1 second)

B) super cheap fee (few satoshi)

Only problem two user need both to be using Lightning. Note that lightning is a protocol, it is not a brand or a wallet.

Otherwise you cannot do a lightning transfer.

Normal btc address : 3xxx, bcxxx, 1axx

Lightning has 3 format : lnxxxxx (called invoices, one off use)

LNxxxx : called LN url , multiple use

Name@domain.com : called LN address, multiple use.

I intend to use LN for saving and zapping (tipping) in nostr but if i ever what to actually do a transaction, both parties must be able to accept lightning transaction , either using LN invoices, LNURL, or LN address