The rules set forth in §§ 121.401 through 121.412 apply to all Federal procurement programs for which status as a small business is required or advantageous, including the small business set-aside program, SBA's Certificate of Competency program, SBA's 8(a) Business Development program, SBA's HUBZone program, the Women Owned Small Business (WOSB) Federal Contract Program, SBA's Service-Disabled Veteran-Owned Small Business program, the Small Business Subcontracting program, and the Federal Small Disadvantaged Business (SDB) program.