Humble expression used when making a request or asking for a favor. Often used in set phrases like よろしくお願いします.
Excuse me, once more please.
Please sign here.
お願いします directly means 'please' for a concrete request, while よろしく is vaguer and often asks for general goodwill or future cooperation.
お願いします is a general polite way to say 'please', while よろしくお願いします specifically asks for the other person's ongoing goodwill or cooperation.
お願いします is the standard polite request formula, while お願いいたします adds the humble いたす for a more deferential, formal tone used in business or service settings.
Humble form of 願う (to wish, to request), consisting of the honorific prefix お + the noun 願い (request) + the humble verb します (to do).