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Types of Cloud Migration: Advantages and Disadvantages

Businesses are increasingly implementing digital transformation efforts involving infrastructure, data, and applications to better their operations. Cloud Migration services are to be considered a necessity in this situation.

Cloud migration services involves moving all or part of your company’s procedures, business data, applications, and some of your operations to the cloud to keep things simple and to the point. It also implies that you wish to move your company’s data, services, and workloads to the cloud by re-creating critical infrastructure parts with cloud platform capabilities.

The advantages are obvious:

Reduced hosting, networking, database, compute, and administration costs: You won’t need to keep your physical servers running during this process, and the good news is that you won’t require a large staff of pros to support your on-premise infrastructure.

Agility and scalability: Cloud-based services can grow to meet fluctuating customer demand, and your teams can collaborate on projects and maintenance from any area.

Disaster recovery: Cloud-based backup and recovery are more reliable and efficient, allowing you to run your business more smoothly.

Better security: The cloud provider may and will always assist you with your infrastructure security, which is referred to as a “shared responsibility approach.”

However, the concept of cloud migration hides a lot of information. You must continuously optimize your cloud consumption and do everything correctly to succeed since if you get anything wrong, even a tiny bit, you will undoubtedly have a budget problem.

During your migration plan, all of the efficiency will undoubtedly begin at the beginning. This article will assist you in exploring the various cloud migration methods and their benefits and drawbacks to give you a head start when weighing your options.

An Overview of Application Migration Methodologies

The approach for cloud migration may differ significantly and dramatically across enterprises and industries. Your selection on how to handle and care for the migration in your company will be founded first and foremost on the company’s reasons, aims, and purpose. The first step in building a clear plan for cloud migration is determining precisely what you want to achieve.

Your present on-premise business infrastructure will decide the method you employ to migrate to the cloud. Both components, cloud migration goals, and infrastructure state will influence your company’s cloud migration strategy.

In this article, you’ll learn about the most typical cloud migration options, which are ranked according to their complexity and the amount of money and knowledge necessary. But first, each of these ways has its own set of benefits and drawbacks, and I’ll help you understand what to expect from each and how to tailor your migration plan to your individual needs.

Rehost: is also known as “lift and shift” because it allows you to move your complete program from your internal servers to the cloud without making any changes.

Replatform: All of your business apps and data will be transferred to a cloud platform, which will make use of some of the cloud platform’s PaaS features.

Repurchase: In this form of migration, an existing SaaS solution is replaced with a new SaaS solution.

Refactor: You can rewrite your existing application in part or whole to increase its performance.

Re-architect: It entails a complete architectural overhaul that can benefit both multi-cloud and native cloud setups.

Rebuild: This refers to rewriting an app from the ground up on the cloud, using the most up-to-date tools and frameworks.

Retire: This method necessitates the use of a program that requires the archiving and cleaning of data.

The Pros and Cons of Different Cloud Migration Approaches

Different cloud migration options have their own set of benefits and drawbacks, and I’ll show you how to figure out what to expect from each one so you can tailor your migration strategy to your specific requirements.

The approach of rehosting (lift and shift)

All of your data, applications, and servers are migrated to the IaaS tier of the cloud platform using this method. Only by using virtual machines and networking services can you continue to deal with servers, per-server maintenance, and networking. The disadvantage is that you will not be able to utilize the cloud’s potential fully.

Advantages: Rehosting is the cheapest and most straightforward approach to shift to the cloud. It only takes a small amount of effort and knowledge, and it eliminates the chance of breaking something by tampering with your application’s code.

Disadvantages: Although it simply requires a simple technique, problems may occur due to complicated application requirements. If a virtual server fails, your application will fail as well. Even if a rehost cloud migration is successful, you won’t be able to use all of the solid cloud-native features.

The replatform approach

You can migrate your application from a traditional server to the cloud using this method, make configuration and environment-specific adjustments, and then transfer it to the cloud without changing the program itself.

Advantages: Because certain SaaS choices currently provide replatforming solutions, replatforming does not require a significant time or financial investment. It will allow you to improve a portion of the application while keeping the remainder of the application running on the cloud.

Disadvantages: One of the drawbacks of this strategy is that it can quickly spiral out of control if you aren’t careful. It might range from minor tweaks to a complete re-architecture of specific components in an application or service. However, there are dangers involved, such as code or configuration mistakes, so you should have a firm idea of which aspects you want to update ahead of time.

The repurchase approach

It entails switching from on-premise software to a cloud-based SaaS alternative. It’s a smart choice if you want to take advantage of cloud solutions’ scalability and flexibility.

Advantages: This method does not necessitate a significant amount of time and effort. Repurchasing is often less expensive than restructuring.

Disadvantages: In some cases, the repurchase approach is more expensive than hosting the software. Repurchasing will not be a possibility if your program is highly specialized and has unique features.

The refactor approach

It entails re-engineering your app to make it cloud-native. It can be utilized when a company needs additional functions that are difficult to implement with the current service architecture.

Advantages: It can take advantage of cloud-native capabilities. They’re always convenient and reusable.

Disadvantages: You’ll need a lot of money upfront, which will take a long time compared to other methods.

The rebuild approach

The application can be built entirely in the cloud. It’s useful when the app’s new features need rewriting the code.

Advantages: It allows you to make full use of everything the cloud has to offer. Supporting and expanding the software or service is significantly easier.

Disadvantages: Getting a new application off the ground may take a long time and effort. Rebuilding a program or service in the cloud could create new flaws that developers weren’t aware of in the older version.

The retire or retain approach

It is used when the application is used infrequently, and it isn’t worth rehosting, re-platforming, or re-architecting for the cloud. The app can be kept on the local servers in this situation.

Advantages: It might help you save money by freeing up space on your on-premises servers. It can also result in significant cost reductions, as app maintenance consumes a large portion of software expenses.

Disadvantages: If an application’s maintenance and support expenses are far higher than the value it provides, building a viable app from scratch may entail a significant amount of time and work.

I hope you’ve gained some insight into the benefits and drawbacks of each technique, and now it’s time to look at the goods and services that the leading cloud providers propose for migration.

What to choose: Rehost, refactor, replatform, re-architect, rebuild, or retain/retire?

Time, cost, and performance will all be factors in your ideal cloud migration approach. Some ways may produce good results but require a significant amount of time, while others may sacrifice performance but allow for rapid migration when time is essential.

Conducting an Assessment and Discovery process is one of the most significant ways to determine the proper strategy. One of your professional staff members should do an inventory of your current systems and apps to evaluate the amount of time and effort required while keeping your objectives and goals in mind.