adverb, noun
later on; afterwards; eventually
Polite and slightly formal adverb/noun meaning 'at a later time'. Often used in business or when making arrangements, similar to 'later' but more courteous than あとで.
詳細は後ほどメールでお送りします。
I will send you the details by email later.
後ほどお電話いたします。
I will call you later.
あとで is the casual, everyday equivalent. 後ほど is more polite and formal, preferred in business or when showing respect.
Compound of 後 (のち, 'later') + ほど ('extent, degree'), literally 'to the extent of later'. The combination yields a polite adverbial expression for a future time.