Collection development is the process of systematically building library collections to meet user needs. It involves assessing user needs, evaluating existing collections, determining selection policies, coordinating item selection, and re-evaluating collections. The main activities include developing collection development policies, managing budgets, selecting appropriate materials in various formats, and acquiring materials through various modes like purchase, gifts, or exchanges. Effective collection development is important for tailoring acquisitions to available funds and enriching library collections to address the issues of information explosion. It remains a continuous cycle as long as the library exists with the basic focus on meeting the information needs of its community.