There are various migration strategies that customers use to migrate applications to the cloud. With these strategies, you can complete the migration in a short time without needing to spend capital on new hardware or modify much of your operational processes. Numerous companies migrate big parts of their legacy IT estate to the cloud.
As the need for application migration to cloud grows, collective industry experience grows too. You can have a great insight from this process to make your life and business smoother.
Mass Migration to the Cloud
People have been taking benefit of the sophistication of technology to migrate systems to more efficient platforms since old times. Hand-written pages to printed ones, self-created electricity to the power network, mainframes to commodity hardware for virtualization, human-computed decryption/encryption to the digital computer and many more examples are present.
The basic procedure around migration, i.e. learning the advantages of the new system, evaluating gaps in the present system, planning and migrating, hasn’t changed. However, the situation of migrating numerous legacy applications to the cloud can be intimidating for companies just due to the extent of the change needed. Modern companies have IT settings that become bigger and more complicated every day and companies hardly have a chance to retire technical debt as they go on building new systems.
To make things simple, a mass migration can be considered as the transport of a meaningful part of your company’s present IT assets to the cloud and you can just call it a “migration”. It may contain a data center, a business unit, a range of data centers or some other portfolio of systems that is bigger than a single application.
Combining what is understood about technology migration and the experience helping companies for AWS migration of their IT portfolios, two mental models have been developed that are useful to many people in achieving mass migration to the cloud.
The first model shows the pattern that many migrations follow. It has 5 phases, viz. opportunity assessment, discovery and planning of portfolio, a design of application, migration, and validation and operate.
The second model contains 6 stages, viz. rehosting, replatforming, refactoring, repurchasing, retire and retain.
Mass cloud migration often needs an organization-wide effort and is most typically taken up by companies that have some experience with the cloud.
You can learn about the cloud and the different phases of the migration process and make the task easier for you.