In this blog post, I discuss an app modernization approach that we call “modernize-by-shifting.” In essence, we take an existing application and move it to “managed” container hosting environments like Azure Kubernetes Service or Azure Service Fabric Mesh. The primary goal of this app modernization strategy is to undertake minimal possible change to the existing application codebase. This approach to modernization is markedly different from a “lift-and-shift” approach where workloads are migrated to the cloud IaaS unchanged with little to no use of cloud native capabilities.