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6 Strategies for Migrating Applications to AWS Cloud

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  • Last Updated : 05 Jul, 2021
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In this article, we will look into the ^different application migration techniques on AWS also known as the “The 6 R’s“.

Strategies for Migrating Applications to the Cloud

  • Migrations shouldn’t be taken lightly, and need plenty of investment long before you’re taking your first migration is important that you just determine what’s in your environment and also the migration strategy for every application.
  • There are a few approaches to Migrating applications to the cloud. Using these strategies, you’ll be able to begin to stipulate an idea on how you’ll approach migrating each of the applications in your portfolio, and in what order.

Specifically for this purpose, we’ve got six approaches that we see as common migration strategies for applications. The six strategies are Rehost, Replatform, Repurchase, Refactor, Retire and Retain also referred to as The 6 R’s.

1. Rehost

Rehost commonly mentioned as lift and shift, maybe a direct migration where you’re trying to select up and move your applications or environments directly into the cloud while trying to form a couple of changes as possible. This is often also referred to as fork-lifting. While trying to migrate, it’s common to require optimizing as soon as possible, but you’ll also find that applications are easier to re-architect once they’re already running within the cloud.

This happens partly because your organization will have developed better skills to try to do so, and also because the hard part of migrating the appliance data and traffic, has already been accomplished. With rehosting, your goal is usually just to undertake and obtain to the cloud as quickly as possible, while maintaining the steadiness functionality, and security of your existing system.

2. Replatform 

Replatforming is concerning gaining some optimization whereas migrating. Therefore instead of a raise and shift restriction, we’re trying a lot of at raise, tinker, and shift. Overall, this would not look too completely different. You’re still making an attempt to require care of the stableness and practicality, however, can|you may} additionally wish to hunt out some ways in which within which will straight off create things easier by the top of the day. Take, for example, your information. Databases vary in complexness and overhead to run, and this doesn’t modification once you progress from running a decibel server in your native surroundings to a decibel engine. What if you had information that failed to need loads of serious customization? You are basically simply running it on a server containing a gently optimized engine and your information. This is often able to not solely change you to require care of your information practicality, however, you’d additionally eliminate a variety of the management tasks whereas gaining options like high availableness and automatic maintenance actions. Times like this, once you are moving to a homogeneous system, that offers some extra advantages, will extremely facilitate optimizing while not a full re-architecting of your applications.

3. Repurchase

In the repurchase strategy, you’re making the selection to maneuver to a special product or licensing model. An example of this strategy might be to use the migration as a chance to upgrade to a more modern version of a product or even to maneuver from a billboard license to an enterprise license, or the opposite way around. The important distinction is that you simply aren’t fundamentally changing the design of the appliance or system.

4. Refactor /  Rearchitect

For the refactor or rearchitect strategy, you’re typically driven by a robust business that has to add features, scale, or performance that will be difficult to attain within the existing environment. Although this strategy can sometimes be the foremost expensive when calculating hours spent, it can often yield the most effective results, since it allows for taking full advantage of the advantages that the cloud offers.

5. Retire

If you’re working in an environment with tons of legacy applications or systems that are around seemingly forever, the retire strategy is often implemented to assist pack up and reduce the assets to be migrated. By removing the applications, not in use, it allows you to direct your attention towards migrating and maintaining the resources that matter.

6. Retain

The last strategy is to retain things as is. These decisions are often made for a ramification of reasons. Sometimes there are applications that you just simply aren’t able to migrate. Or, in some cases, the business feels easier keeping them on-premises.

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