A search engine optimization agency is a company that helps your business get higher rankings in search results on major search engines like Google and Bing. Also known as search engine optimization company, an SEO agency offers search engine optimization services. SEO agencies can help you with all kinds of digital marketing tasks, from content marketing to social media management. However, SEO is one of their core services, so it’s a good place to start if you’re looking for help with your online presence.