服务业 is the standard economics-and-news term for the tertiary sector — restaurants, banks, hotels, health care, IT services, retail. It contrasts with
制造业 (zhìzàoyè, manufacturing) and
农业 (nóngyè, agriculture). The
业 suffix systematically forms 'industry' nouns:
旅游业 tourism,
房地产业 real-estate,
金融业 finance.