While technologies keep forging ahead, enterprises need to keep up with the trends at all times. This surely keeps the industry leaders on their toes because their software and systems play a pivotal role in adapting, thriving, and making their business competitive in the market.
User behavior and business norms have gone under transformation and so have business applications. Business leaders who drive innovation in their companies need new technologies to empower them in this transformation. They need fast applications, systems that support connectivity and platforms that bring everything together.
Now the question of the hour is, does your current architecture, software or applications hinder your business performance by not meeting the needs and goals? If yes, then it is time to move to modernizing legacy systems.
If a piece of software cannot be deployed with modern processes or systems, it is referred to as legacy software.
A legacy system is an information management system that is based on outdated technologies but is critical for everyday operations. Legacy systems are housed in monolithic and tightly coupled environs. These systems are functional, but they are a burden to the company financially. They require niche IT skills to operate and there is little room for innovation. It hampers your overall user experience.
Having said that, the legacy system is not always referred to as “old” based on its duration of operation. Sometimes the infrastructure itself might not be able to meet the goals of the businesses.
Legacy modernization is the process of upgrading the infrastructure and systems to achieve operational efficiencies, overcome technology constraints, deliver customer experience expectations. It is an approach that supports adoption and integration with other systems based on modern technology platforms and executes growth in performance, flexibility, and advancement.
Businesses should know that it is more than just a software update. The following factors are crucial and should be evaluated before modernizing the legacy systems.
Businesses usually go with either of these approaches while strategizing modernization:
Revolutionary modernization – It is a process where a complete, inside-out infrastructure transformation is done.
For instance, mergers and acquisitions require this approach where businesses must adapt to the infrastructure of the new entity quickly. When legacy systems start posing as a risk factor to the enterprise, a revolutionary approach is pursued.
The catch with this approach is that without any support from vendors, businesses might face security and compliance issues. There is little scope for new updates.
This approach can cause disruption and hindrance; it is expensive too
Evolutionary modernization – It is a multi-phased, long-term approach where the complete transformation of the framework is done.
In this approach, businesses modernize one workload at a time and slowly, but steadily, complete the process. Doing this not only minimizes the disruptions but also saves costs for the business.
Businesses that have a contract with vendors enjoy the benefits of updating their systems till the end of their contract. Hybrid models permit businesses to connect cloud resources to on-premises environs and support evolutionary legacy transformation.
Before going ahead with evolutionary or revolutionary approach, a detailed evaluation of the following factors should be done.
There are seven methods of modernizing legacy systems. Each one comes with its set of pros and cons. These methods are commonly known as Seven Rs. Let us read them one by one in detail.
IT teams must plan diligently on how the existing data will be migrated and supported in the new system without hampering the ongoing business processes.
With this method, the system is rebuilt entirely, legacy systems are fully upgraded to cloud-native environment.
Methodologies like DevOps and technologies like microservices, containerization, service meshes, and declarative APIs are used to gain scalability, enhance performance, and cut operating costs.
For instance, moving a COBOL-based system from mainframes to a LINUX or Windows environment. Compilers are available to port applications from one platform to another. Hence, there will be no changes made in the code structure or the system’s features and functions.
Businesses can benefit from the reduced infrastructure costs with minimum efforts and maximum efficiency.
Rehosting is commonly known as “lift and shift” method where businesses can host on the cloud faster without the need of refactoring or re-engineering the existing systems. An example of this is moving a SAP system from an on-premises data center to AWS, where the system and applications are moved as is to the cloud.
This approach doesn’t utilize the benefits of cloud native tools; hence, it is supported by emulators that aid in running the legacy systems in modern environs seamlessly. You might know about COBOL mainframe emulator for Windows.
Businesses can move the database of monolithic applications to the cloud while still running most of the applications onsite. The architecture of the applications is optimized only with code changes.
This method gives businesses an ample amount of time to think through each application component and decide the best-fit platform to gain efficiency.
Liquidation of the company, an upcoming merger or any other consideration are not the strongest reasons to go for modernization of the legacy systems. There must be a long-term plan to ensure that the important functions are competent.
Think of retention as a temporary measure, it cannot be a long-term plan. Retain the systems that are critical but when they are becoming ineffective with resource-heavy structure, then think of modernization.
At times this might require redesigning of the processes to bridge the gap in operations from the retired system. One thing guaranteed is that businesses will be optimized for sure without aged systems.
Irrespective of the size of the project, you need to plan the entire process way ahead of bringing in the vendors. If not, it might affect the functioning of the entire businesses and in worst cases, it can halt the functioning of systems for some time. Consider the below-mentioned points while chalking out a plan.
The fundamental thing to do in application modernization is to assess your level of maturity. In case this is the first time your business is undergoing modernization, then it is at an early stage of maturity. In such scenario, you should focus on easy tasks like:
Collect information about timelines, budgets, and business goals to decide where modernization can provide the highest ROI. Make sure that along with the IT team, data and security teams should also be included at this stage of the preparation process.
The modernization process should be done in such a way that it touches every part of the IT system and applications. Upgrading should make the system and performance efficient; at the same time, it should be easy to use for the customers as well. Decide on the pace and phases of modernization of legacy systems so that it does not hamper the overall business processes.
You may or may not need to modernize legacy systems today. But you can always assess your processes and performances and check when will be the right time to undergo transformation. Staying competitive and continuing to deliver better results everyday needs a sturdy system. Check with your team about the possibilities.
Partner with experts from the industry to get optimum results. At Embitel, we have completed numerous projects on modernizing legacy systems across industries and geographies successfully.
With the help of the right tools, adequate techniques and area of expertise, we will help your business to modernize legacy applications, transform IT operations and streamline your business processes.