SEM, or Search Engine Marketing, is a digital marketing strategy that involves promoting a website or business through paid advertisements on search engine results pages. This form of online advertising allows businesses to target specific keywords and demographics, increasing their visibility and driving traffic to their website. Unlike SEO, which focuses on organic search results, SEM utilizes paid search ads such as Google AdWords to reach potential customers. With the ever-growing competition in the digital world, SEM has become an essential tool for businesses to stay relevant and competitive in the online market.