Keyword research is one of the most important search engine optimization tools. Activities concerning search volumes and user queries as a result of which a website is ranked or wants to be ranked are called keyword research. Keyword research enables to obtain information about what user queries are made and how many times. In line with this information, optimization strategies are adopted for relevant keywords. In a nutshell, the needs of the targeted user base are better understood, and pages to address these needs may be created or necessary arrangements can be made on existing pages. Thus, the number of qualified visitors can be increased. Keyword research results can be used for all marketing activities as well as for search engine optimization.