Definition
Migration is the process of moving data, applications, or entire IT infrastructures from one environment to another. This transition can involve shifting from on premises systems to the cloud, moving between cloud providers, or upgrading to newer hardware or software versions. It is a strategic undertaking that requires careful planning and execution to ensure minimal disruption and maintain operational continuity. Successful migration projects enhance system performance, reduce operational costs, and improve scalability and security. For instance, a company might migrate its customer relationship management database from an outdated local server to a cloud-based solution like Amazon RDS. This differs from a simple data backup, which is primarily for disaster recovery, as migration aims to replace the existing system with a new, often more advanced, one. Understanding migration is crucial for IT professionals preparing for certifications such as AWS Certified Solutions Architect and CompTIA Cloud+.