Search functionality refers to the feature that allows users to find specific information within a database, website, or application. It typically involves entering keywords or phrases into a search bar, which then retrieves relevant results based on the input. This feature enhances user experience by making it easier to locate desired content quickly. The effectiveness of search functionality often depends on algorithms that rank results based on relevance and accuracy. Advanced search options may include filters, such as date or category, to refine results further. Popular examples of search functionality can be found in platforms like Google, Amazon, and Wikipedia.