A hybrid cloud migration approach involves using a combination of on-premises and cloud resources to host an application. A hybrid cloud migration approach is suitable for applications that have dependencies or requirements that cannot be met by the cloud alone, such as legacy infrastructure, compliance, security, or performance1. A hybrid cloud migration approach can help reduce capital expenses by moving some components of the application to the cloud, while retaining others on-premises. A hybrid cloud migration approach can also provide flexibility, scalability, and resilience to the application, as it can leverage the best features of both environments2.

A lift and shift cloud migration approach involves moving an application to the cloud as-is, without making any significant changes to its architecture or configuration. A lift and shift cloud migration approach is not appropriate for applications that require legacy infrastructure and cannot be moved to the cloud, as it would result in compatibility issues, performance degradation, or increased costs3.

A rip and replace cloud migration approach involves discarding an application and replacing it with a new one that is designed for the cloud. A rip and replace cloud migration approach is not appropriate for applications that require legacy infrastructure and cannot be moved to the cloud, as it would result in loss of functionality, data, or customization, as well as increased complexity, risk, and cost4.

An in-place upgrade cloud migration approach involves updating an application to a newer version that is compatible with the cloud, without changing its location or platform. An in-place upgrade cloud migration approach is not appropriate for applications that require legacy infrastructure and cannot be moved to the cloud, as it would not reduce capital expenses or provide any benefits of the cloud. References: CompTIA Cloud Essentials+ CLO-002 Study Guide, Chapter 2: Cloud Migration, pages 49-50.