What are Section 508 requirements for federal IT products?

How do Section 508 requirements apply to federal IT products?

According to Section508.gov, Section 508 applies when a federal department or agency, including the United States Postal Service, develops, procures, maintains, or uses electronic and information technology. The statute requires access to information and data that is comparable for federal employees with disabilities and for members of the public seeking information or services, unless the agency would face an undue burden. Section508.gov also states that the Section 508 Standards contain the scoping and technical requirements for ICT purchased, built, maintained, or used by federal agencies. In practice, agencies must determine which standards apply and whether any exception applies before they buy or build technology. If meeting the standards would impose an undue burden, the agency must provide alternative means of access to the information and data involved. For acquisition and development teams, the practical sequence is to inventory the ICT, determine exceptions, and then determine which standards apply.