* Business: "After years of hard work, Sarah finally received a promotion to Senior Manager."
* Marketing: "The company launched a new advertising campaign to promote their latest product."
* Social media: "The influencer's Instagram post was a clever promotion for their brand."
* Politics: "The candidate's speech focused on his plans for economic promotion."
* Everyday life: "The supermarket was having a promotion on all fresh produce."
As you can see, "promotion" can refer to advancement in a job, advertising a product or service, or something being offered at a reduced price. The meaning will depend on the context of the sentence.