Most existing applications/projects are moving to Cloud platforms/On-premise using microservices architectures. Assessment of the existing application is critical concerning application complexity and risk. An appropriate strategy has to define to analyze the current application to determine the risk and complexity of the existing application landscape. The assessment considers factors like Overall Architecture, Presentation Layer, Business Layer, Data Layer, Security, Deployment, Technology, Infrastructure, Performance, and Monitoring for existing applications. Collect the information from the different parameters and decide which is the best option for Migration strategies like Rehost, Refactor, Rearchitect, and Rebuild. For each parameter, the architect fills in the information by studying the existing application/collecting the information from the application stack holders. Application assessment helps the Organization to understand the following:
- Understanding of the existing application architecture and critical findings.
- Integration points across applications (upstream and downstream).
- Infrastructure, Software usage
- Pain areas related to Business users.
- Road map to target system platform using any one of the migration strategies.
There are a number of assessment criteria that information will need to be gathered for to provide an assessment of the applications as below: