Who is DAC Audit Services (DACAS)? Get details about us and who we are by referring to “ISO Audit Provider (IAP)™”. Learn in-depth about the services we provide. Refer to “About Our Services” which provides more information on the services we offer. Who are DACAS Auditors? What qualifications do they have? Refer to “Our Auditors”. Refer to “DAC History”, to gain knowledge of our history, like how DACAS evolved in to an ISO Audit Provider (IAP).