If we take a small segment of that 13 billion to your business, it means a considerable amount of people are looking for exactly what you offer. A big part of Search Engine Optimization is optimizing your website to make it easier for visitors to navigate and use. Google collects user data on your site and makes further ranking decisions to determine where your content pages should be ranked in the organic results of search engines. A title tag describes what your domain is all about. This is one short sentence in which you describe your online space. It will appear in several places, such as: the SERPs, social media, external pages, and in browsers.