Application Migration Services refer to the process and methodologies involved in moving software applications from one environment to another. This could mean migrating from an on-premises data center to a cloud platform, from one cloud provider to another, or from older systems to more modern architectures. The services are typically offered by IT consulting firms, cloud service providers, or specialized migration service companies.
These services generally encompass several steps:
1. Assessment: Analyzing the existing application portfolio to determine which applications are suitable for migration, their complexity, dependencies, and the potential benefits of moving them to a new environment.
2. Planning: Developing a detailed migration plan that includes the migration strategy, costs, timelines, risks, and the resources required for the migration.
3. Migration Strategies: Deciding on the best approach for migration, which might include:
- Rehosting ("lift and shift"): Moving applications to a new environment without making significant changes.
- Refactoring: Modifying the application to better suit the new environment, which can involve some code changes.
- Rearchitecting: Making significant changes to the application's architecture to take full advantage of the capabilities of the new environment (e.g., moving to a microservices architecture).
- Rebuilding: Completely rewriting the application from scratch using cloud-native technologies.
- Replacing: Substituting the existing application with a software-as-a-service (SaaS) solution.
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