You now have the cloud, but what is your migration strategy?
So you’ve chosen to move to the cloud, but you still have some decisions to make. For starters, which cloud migration options make the most sense for which workloads? And how do you decide on the best approach based on your existing infrastructure, future business needs, and your budget?
Here are six application migration strategies — ‘The 6 Rs’ — to help make your decision and unlock even more value from the cloud:
Rehost: Many businesses start their cloud migration with rehosting — often referred to as ‘lift and shift’ — where you move your existing workloads and applications to the cloud. If you’re under time constraints or need to migrate legacy workloads, this might be your best option. While it doesn’t unlock all of the cloud’s benefits, such as elasticity, it paves the way for future optimization and cost savings.
Replatform: With this option, you can optimize your applications without changing your core architecture. If you want to migrate a database instance, for example, you can use a database-as-a-service platform to gain instant efficiencies.
Refactor: If you want to add features, scalability and performance that’s unattainable in your existing IT environment, refactoring involves redeveloping or recoding an application to allow the use of PaaS services. Rearchitecting, on the other hand, uses container services such as Kubernetes to scale and orchestrate containers using your choice of compute service, such as Azure Kubernetes Service (AKS). This generally requires a deep re-write and redesign of the application to work with containers and service mesh.
Repurchase: For business applications, you could consider moving to a completely different product or consumption model, like switching your CRM application to a SaaS service, such as Salesforce.com or an HR system such as Workday.
Retain: Not all of your legacy applications will become part of your cloud migration (or at least not right now). This could likely include anything you’ve recently upgraded. You can keep those ‘as is’ or migrate them to the cloud in the future.
Retire: As part of an IT assessment, you may discover areas of your IT portfolio that are no longer being used — in fact, it’s estimated that up to 10% of enterprise IT portfolios are estimated to be unused. These should be turned off to save you unnecessary expenses.
If you need a hand determining which cloud migration choice is best for your business or would like a free cloud-readiness assessment, book a time here.