6-Step Process of Migrating Legacy Applications

Traditional businesses still use their old on-premise tools for day-to-day tasks, even though their software is outdated. It's important to keep an eye on them to see if they become problems that could stop growth. When upkeep costs go up, and the performance of an old system goes down, it may be time to move to the cloud.

Moving from a legacy system to the cloud makes sense, especially if the legacy system uses old technologies and only has a few software functions. People who started using the cloud early are already seeing benefits like high scalability, speed, efficiency, and new ideas.

What does Legacy Application Migration mean?

You can move or improve Legacy applications xxzszrom on-premise servers to a current solution through a process called legacy application migration. When you migrate Legacy applications to the cloud, your company can use the newest tools and technologies, speeding up growth and improving the customer experience. It makes it easier for people in the company who work in different places to work together and talk to each other.

Why is moving legacy apps to the cloud so important right now?

It might make sense to move Legacy applications to the cloud for a number of reasons. For instance, one reason is to take advantage of the cloud's flexibility, cost-cutting, and cutting-edge technology. People who own traditional businesses often don't want to move because they don't want to change to something new or are afraid that what they already have will break down. But it's time to get over your fears when Legacy Applications that are used to keep things running smoothly start getting in the way of business growth and scalability.

Why migrate legacy applications to the cloud?

Scalability of technology

Because of the cloud infrastructure, your Legacy applications can grow and use more storage space or powerful resources as demand rises. You can also switch to a smaller cloud plan when your operations aren't as busy and your apps don't need as much storage space or computer power. To grow up in the cloud, you don't have to spend money on setting up extra IT infrastructure. Also, you don't have to pay to keep extra storage room in the cloud when you want to grow.

Agile and flexible processes 

Cloud makes working together in real-time easier for people in the company. Multiple people can view and change the same things at the same time in the cloud, no matter where they are. It improves how work gets done and how departments work together within the company.


Cloud service companies' service-level agreements make sure that you have almost no or no problems with hardware or downtime. They also take care of backups and emergency recovery so that your business can run smoothly in the cloud.

Reduced costs

Startups, small businesses, and large companies with tight funds worry a lot about how much IT infrastructure costs. Moving to the cloud, you can save money on infrastructure and upkeep costs. In addition, cloud systems offer a number of free services. That means you only have to pay for the extra services your business needs.

Top Reasons Why Legacy Application Migration Doesn't Work

Moving Legacy Applications to the cloud is a complicated process. Businesses don't try to migrate because it's too much work. They think that the Legacy Applications don't need to be fixed if it's not broken. 

To make a work cloud migration plan, your business managers and skilled tech experts need to work together on legacy app migration. To ensure the transfer plan works, it must be carried out according to best practices. But relocation plans don't always work out because of these things:

  • When there isn't a clear migration plan, unexpected problems arise.

  • It's hard to re-engineer and move legacy systems that aren't well documented and use old technology.

  • Not caring about how users feel during the cloud move process.

  • Not properly checking out Legacy Applicationss and how they depend on each other before moving them.

  • Not running existing systems at the same time until the apps were moved to the cloud so they work correctly and reliably.

Modernizing old Legacy applications before moving to the cloud

Moving Legacy applications to the cloud needs to be updated first, especially if they were made on older platforms. On-premise apps can only run on a particular platform, so they might not work in the cloud.

Businesses often use the lift-and-shift cloud transfer method to make the move to the cloud go smoothly. Most of the time, it is faster and cheaper than other ways. 

But if your apps aren't ready for the cloud, they could cost you a lot in the long run because they might not work well or securely or be challenging to manage. Also, you might not be able to get many cloud benefits after transfer if you don't update Legacy applications.

Not every application needs to be redesigned entirely before it can be moved. You might need services for modernizing Legacy applications to fix the technology (codes, databases, or platform), the UI/UX design, the front end, the back end, and other parts. 

Because data is so important to the success and growth of modern businesses, you need to modernize your cloud data before you move your apps to the cloud. 

So, planning to move from old systems to the cloud with a long-term view and including the modernization process can help avoid many problems in the future.

What options are there for legacy application Migration to the cloud?

Moving Legacy applications to the cloud can be done in a number of different ways. You can choose the one that works best for your business and technology needs. 

Because there isn't just one way to move to the cloud, your skilled IT partner can make a cloud plan that is just right for you by combining two or more options. Some of the choices for moving to the cloud are, but are not limited to:

Rehosting an application

With this quick and easy migration choice, the app is moved from on-premise to the cloud with little to no change. It's mostly used for large-scale apps and works well when all you want to do is let people access the app from anywhere in the world.

Re-platforming an application

For this migration option to work, the application design needs to be tweaked a little, and the platform or infrastructure needs to be changed. If you want to move from on-premise systems to Azure SQL Server or AWS RDS, for example. It works great when you need to improve app performance and make it easier to scale quickly.

Refactoring or re-architecting an application

In this migration plan, the Legacy Applications design will be changed so that it can use all of the cloud's features. It requires big changes to the Legacy Applications, like turning its single-piece design into microservices to make it faster and better at what it does. If your business is ready to switch to a cloud-native architecture fully, this choice is best for you.

How do you Migrate Legacy Applications to the cloud?

How hard your migration is depends on what kind of application your business needs and its top priorities. For success, you need a complete end-to-end plan made by experts in cloud migration after a full analysis. 

Because every migration is different, the method for moving to the cloud should be carefully thought out and planned. You can always use the tips below to make sure your move from old systems to the cloud goes smoothly, no matter what changes need to be made.


SWOT Analysis

It is essential to look at the pros, cons, opportunities, and risks of moving your Legacy applications to the cloud fairly and rationally. A SWOT analysis helps you make more useful plans than just your technical plan. 

The evaluation should also include integrations with third-party software and prices for training employees, security, and compliance. This step would help find possible problems with operations, money, technology, and training so that they can be taken into account during the overall planning process. 

To keep up with new risks and opportunities in a CI/CD setting, SWOT analysis and evaluation of risks and opportunities must be done all the time.

Infrastructure Assessment 

Looking at the current system from the inside out is very important. It helps gather a lot of different kinds of data, such as a full list of all the computers, the different kinds of devices and how well they work, profile data to help make a plan for moving to the cloud, and so on. 

The business team can see how ready the real and virtual workspaces are for moving to the cloud platform of their choice. This should also include a look at the trained workers the company has on hand and whether any of the work will need to be outsourced.

  • Infrastructure

  • Network architecture

  • Performance requirements

  • Availability of skilled resources

  • Resilience requirements

Selection of Migration Strategy

You need to decide whether to re-host, re-platform, or re-structure/rearchitect your Legacy Application as the best way to move it to the cloud.

Selection of Technology and Platform

At this point, your transfer team can figure out which technology will make it easiest to update and move the Legacy Applications. It's important to pick the right cloud platform (like Microsoft Azure, Amazon Web Services, etc.) based on the services it offers for moving from on-premise to the cloud and beyond.

Pilot Migration Execution

Doing a pilot or test transfer before getting ready for the real process is important. This step lets you test the app in real-life settings that are similar to how you normally do things. It helps figure out any problems before the real migration by seeing how users interact with the new environment.

Our experience tells us that the pilots might take a lot of time because real users will be trying the app. No matter how much time it takes, finding potential problems before the real migration is still a low-risk strategy.

Migrating Legacy applications to the cloud

Once you have looked at and prepared the current tasks and applications, it is time to move the Legacy application to the cloud platform of your choice.

At this point, the best things to do are:

  • Backup your data

  • Post-migration Testing

Problems and Solutions in Legacy Application Migration

Because legacy applications are so crucial to your business, moving them to the cloud can be very hard. The most likely problems you'll have are the following:

Cloud Compatibility 

Challenge: The pre-migration assessment often shows that the Legacy Applications don't work with the cloud, which means that rehosting isn't a choice for cheap and quick migration.

Solution: You have to choose between re-forming and restructuring strategies, which can be expensive and take a lot of time, based on whether you need to optimize or modernize.

Before you start the migration project, you should talk to cloud pros. It lets you know if your Legacy Applications can be moved to the cloud, how much it will cost, how much time it will take, any risks and chances that might come up, and any other essential details.

Cloud Adaptation

Challenge:  As you update a Legacy Application and move it to the cloud, you may need to think about the difficulties of managing and maintaining cloud-based technology.

Solution: You need the right skills to handle cloud environments and dependencies well so you can see how things are running and fix problems as they arise.

Lack of skills

Challenge: Your in-house IT team might not have the right knowledge and skills to move your old systems to the cloud properly.

Solution: Due to the high number of cloud breakdowns, it is recommended that you work with a well-known IT partner. Your IT team should have real-world experience moving old systems to any cloud platform you choose.

Modernization and Moving Cost

Challenge: Updating and moving Legacy applications can seem expensive at first because they use old technology. The cloud can save you money on upkeep and service costs, but moving from on-premise to the cloud might cost a lot at first. Because of these things, businesses often stick with their existing methods.

Solution: Getting an expert opinion can help you figure out if moving to the cloud could have long-term benefits like adding value, cutting costs, improving speed, and being able to grow. Since moving to the cloud is generally done with the long term in mind, it is best to compare the long-term benefits to the short-term costs and make a decision based on that.

Bad Planning

Challenge: There are many risks that could happen if the migration plan is not well thought out and does not include enough project assessment. These could be things like the project taking longer than planned, costs going over budget, unmet business goals, the end result not meeting requirements, and so on.

Solution: The modernization and migration roadmap and plan are very important to the success of a cloud transfer project. Skilled and experienced cloud professionals can help you make a well-thought-out plan based on good study. They can make a plan with exact due dates and put your business and technology needs in order of importance. There are assumptions, steps that need to be taken, and options for iterations in the migration plan. It also gives the team an exact estimate of the time and resources they will need, which helps them stay on track.

Frequently Asked Questions (FAQs) about Legacy Application Migration to the Cloud:

Q1. What is Legacy Application Migration?
Legacy Application Migration is the process of moving or improving outdated on-premise applications to a modern cloud-based solution. It involves transitioning from older technologies to newer ones, allowing businesses to benefit from enhanced scalability, efficiency, and the use of cutting-edge tools.

Q2. Why is moving legacy apps to the cloud important?
Moving legacy apps to the cloud is crucial for several reasons, including increased scalability, agility, reliability, and cost reduction. Cloud migration enables businesses to leverage flexible infrastructure, work collaboratively in real-time, and ensure reliable services through cloud providers' service-level agreements.

Q3. What are the top reasons legacy application migration may fail?
Legacy application migration can fail if there isn't a clear migration plan, if legacy systems are poorly documented and use outdated technology, if user experience is not considered, if interdependencies are not properly assessed, and if existing systems are not run simultaneously during the migration process.

Q4. Why is modernizing old legacy applications essential before moving to the cloud?
Modernizing legacy applications before cloud migration is essential to ensure compatibility, security, and optimal performance in the cloud environment. It involves updating codes, databases, UI/UX design, and other components to maximize the benefits of cloud technology.

Q5. What are the options for legacy application migration to the cloud?
Legacy applications can be migrated to the cloud through various methods, including rehosting (quick migration with minimal changes), re-platforming (tweaking application design and infrastructure), and refactoring/re-architecting (significant changes for cloud-native architecture).

Q6. How do you migrate legacy applications to the cloud?
The migration process involves conducting a SWOT analysis, performing an infrastructure assessment, selecting a migration strategy (re-host, re-platform, or re-architect), choosing the right technology and platform, executing a pilot migration, and finally, migrating legacy applications to the chosen cloud platform.

Q7. What are the common challenges in legacy application migration to the cloud?
Common challenges include cloud compatibility issues, adaptation to cloud-based technology, lack of skills in the in-house IT team, concerns about modernization and moving costs, and potential problems arising from poor planning.

Q8. How can businesses address challenges related to legacy application migration?
Businesses can address challenges by consulting with cloud professionals, conducting thorough pre-migration assessments, acquiring the right skills to handle cloud environments, considering long-term benefits versus short-term costs, and developing a well-thought-out migration plan with clear timelines and priorities.

Q9. What is the importance of a SWOT analysis in legacy application migration?
A SWOT analysis helps businesses evaluate the pros, cons, opportunities, and risks associated with legacy application migration. It assists in making informed decisions by considering technical, operational, financial, and training aspects, helping identify potential issues and opportunities throughout the migration process.

Q10. How can businesses ensure a successful legacy application migration to the cloud?
Ensuring success involves careful planning, continuous evaluation through SWOT analysis, thorough infrastructure assessments, selecting the right migration strategy and technology, executing a pilot migration, and addressing challenges proactively with the help of experienced cloud professionals.