This article provides a detailed examination of the varying degrees of responsibility shouldered by application owners, from minimal monthly check-ins as an Application Monitor to daily, in-depth engagements as an Application SME (Subject Matter Expert). The article lays out the specific duties, time commitments, and tools required for each level, as well as how different organizations can tailor these roles to their needs. With insights gathered from years of industry conversations, the article also discusses how application owner roles can significantly impact the efficiency and security of an organization's IT management.