The ".edu" domain is a top-level domain (TLD) used primarily by educational institutions in the United States. It is often associated with colleges, universities, and other post-secondary educational organizations. To obtain a ".edu" domain, institutions must meet specific criteria set by the U.S. Department of Education. This domain helps users identify credible educational resources online. Websites with a ".edu" extension are generally considered reliable for academic information, research, and educational materials. The use of ".edu" signifies that the site is affiliated with an accredited institution, making it a trusted source for students and educators alike.