Amazon Web Services (AWS) is a subsidiary of Amazon.com which provides on-demand cloud services. AWS made a debut in 2006 with a few services. Then, in 2012 launched the AWS Marketplace accommodated a vast range of services provided by AWS.
Again, Migration is a big task and AWS facilitates Migration in phases. So, let me walk you through the different phases of Data Migration.
Phases of AWS Migration
Data Migration seems an easy process because, in layman’s term, it means moving your data from one location to the other. However, it is more complex as the process involves different phases. Let me now talk about the various phases of Migration:
Phase 1: Discovery — Apps which can be moved to Cloud?
There are times you need not require moving your entire business to the cloud. This is where segregation is important. You need to identify the applications which can be Migrated, and which cannot.
Now, let’s go to Phase 2 i.e. choosing the method for AWS Migration.
Phase 2: Assessment — Choosing Your Migration Method
Depending on the data, Amazon Web Services (AWS) provides different ways to Migrate your application e.g. AWS Snowball, AWS Snowmobile, AWS Direct Connect, etc. Once you have chosen an appropriate way to move your data, also look for the resources you will need for it. Let us now explore the different ways of storing data on AWS Cloud in Phase 3.
Phase 3: Proof of Concept (POC) for AWS Storage
Once you know how and what you are migrating, next, you have to figure out how and where you will store it. The entire motive of moving to AWS is to minimize expenses. In this phase, you’ll test your workload and understand about AWS Storage Service, their benefits, limitations, and the necessary security controls.
Phase 4: Application Migration to AWS
Now that you have all the pre-requisites like the blueprint, Migration tools, list of assignments, backups and its synchronization with your on-premises data repositories. You can finally migrate your project to AWS Cloud. Once you have Migrated your project to cloud, reliability, and durability are the added benefits you get.
Let’s see the changes AWS brings to your architecture in Phase 5.
Phase 5: Enterprise Cloud Operations
At this point, you’ve already migrated to AWS, and AWS will bring updates that you’ll need to incorporate in your existing architecture. Hence, you must ensure that you have a 24×7 support team keeping track of system maintenance and upgrades after the Migration.
So, this was about the different phases of AWS Migration and how to implement it. Let’s explore the strategies for AWS Migration.
Application Migration Strategies ‘The 6 R’s’
The complexity of migrating existing applications varies, depending on the architecture, Amazon came up with different strategies which they commonly termed as 6 R’s. Let us look into each of them:
Rehost: – You have your application ready and working then you can simply Rehost it on AWS. Also referred to “Lift and Shift”. You lift your services and applications from your hosting environment and shift them to cloud using a third-party exporting tool.
Replatform: – You have an outdated version of your application running on your hosting environment so you have to modify your application and then Rehost it. Replatform is a modification of “Lift and Shift”. It involves optimizing the cloud architecture to achieve the benefits without changing the core architecture of the application.
Repurchase: – There would be certain applications that will not be compatible with the new architecture. In that case, you need to purchase a new application for the new architecture. AWS Marketplace provides a wide range of services that too with a “Pay as you Use” model. Repurchase is also referred to as “drop and shop” where you upgrade, ease the implementation, and accept the new architecture and make changes to the existing model.
Refactor: – You want to add up new features, scale up the limits of the existing business model and performance that are difficult with the existing environment. You reconsider your needs, though the solution is a bit expensive. Improving business by moving to a service-oriented architecture (SOA) will benefit your business in the longer run.
Retire: – After AWS Migration you can differentiate between useful and use less resources. Hence, you cut off all the resources that are no longer useful to the business and build a strategy around the new resources. This will cut down the extra cost. With lesser things to worry about, now you can focus on maintaining the resources used by the new business model.
Retain: – As you know, the sections of your project you need to migrate. You can simply use any of the above-mentioned strategies. Then, build a strategy to retain those applications, which, according to your business model are yet not ready to be migrated to the cloud or the applications that were upgraded recently.
We saw the different strategies, together known as 6 R’s, one should choose wisely while AWS Migration. Now let us see the bigger picture that lies after implementing AWS Migration.
Benefits of Amazon Web Services (AWS) Migration
AWS Migration gives your organization limitless benefits. Let us look into the major ones in brief.
Elasticity: – Adding and Removing capacity whenever it is needed is the greatest benefits of elasticity.
Disaster Recovery: – With a 99.95% guaranteed uptime, businesses can be confident knowing that their data will always be available.
Enhanced Cost Management: – The IaaS platform provides two major benefits. First, an IaaS such as Amazon Web Services is available as a monthly service. Secondly, it eliminates the need to continue to purchase and maintain physical hardware.
These were the benefits of AWS Migration. Let us jump into the services offered by AWS to ease the process of Migration.
Services for AWS Migration
AWS Migration hub:
AWS provides a single location for tracking Migration process. Migration Hub gives you the freedom to choose the Migration partner and tools that fit your needs.
AWS Server Migration service (SMS):
AWS SMS is an agentless service that helps migrate loads of on-premises workload to AWS easier and faster. It allows you to automate Migration and track replication of Server. It makes coordinating with your large scale-server Migration easy.
Amazon Kinesis Firehose:
The easiest out of all the methods. It can capture and automatically load streaming data into Amazon S3. You can analyze real-time data to get timely insights of Migration.
An exabyte scale data transfer solution to move an extremely large amount of data to AWS. This makes the transfer of massive volumes of data easier.
A petabyte-scale data transfer solution that uses secure devices to transfer a large amount of data in and out of AWS.
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