An "Extension" refers to a program or service that provides additional resources, support, or education to a community. Often associated with universities, such as the Cooperative Extension Service, these programs aim to share knowledge and improve the quality of life for individuals and families. They cover various topics, including agriculture, health, and youth development. In the digital world, an "Extension" can also mean a software add-on that enhances the functionality of a web browser. For example, Google Chrome extensions allow users to customize their browsing experience by adding features like ad blockers or password managers. These tools help improve productivity and security online.