Search Engine Marketing (SEM) is a powerful online marketing strategy that involves promoting your website through paid advertising on search engine results pages (SERPs). When someone searches for relevant keywords related to your business, your ad can appear at the top or bottom of the search results, increasing your visibility and driving targeted traffic to your website. SEM platforms like Google Ads allow you to create targeted campaigns, set budgets, and track your performance. By effectively using SEM, you can reach potential customers at the exact moment they're looking for your products or services.