Corporate and Company Context: This is the most common usage. Companies define their “business scope” (`业务范围 yèwù fànwéi`), discuss their “main business” (`主营业务 zhǔyíng yèwù`), or plan to launch a “new business line” (`新业务 xīn yèwù`).
Service Counters (Banks, Telecom, Government): When you approach a service window, the first question you'll likely hear is, “请问您要办理什么业务?” (Qǐngwèn nín yào bànlǐ shénme yèwù?), meaning, “Excuse me, what service would you like to handle?” Here, `业务` refers to any transaction or service offered.
Individual Performance: A manager might ask an employee about the progress of their `业务`, referring to their assigned tasks, projects, or sales targets. Someone who is `业务熟练 (yèwù shúliàn)` is “proficient and skilled at their job.”