Question: what are iusr and iwam domain accounts?
Answer: What is IUSR and IWAM accounts. IUSR and IWAM date back to the very early days of IIS when we installed it separately (not as an OS component). ... If the IIS is installed on domain controllers then a domain account get created with IUSR_Servername & IWAM _servername as there is no local account for domain controllers.