Cloud deployment archetypes are strategic frameworks for moving and managing applications in cloud environments, originating from AWS's migration strategies and now adopted industry-wide across all major cloud providers. These archetypes guide critical decisions about how to handle legacy applications, new developments, and infrastructure transitions, directly impacting timelines, costs, and business outcomes. Understanding these patterns is essential because choosing the wrong archetype can result in wasted migration effort, cost overruns, or systems that fail to leverage cloud benefits — while the right choice accelerates modernization and maximizes ROI.