Legacy software systems can be a major headache for organizations that rely on them to run their business operations. These systems are often outdated, complex, and difficult to maintain, making it difficult to keep up with modern software development practices. However, product-led development methodologies can provide a solution for modernizing legacy systems. In this article, we will discuss how to apply product-led principles to modernize outdated software systems.

Legacy systems refer to outdated software systems that are still in use by an organization. These systems are often built on outdated technology and lack modern software development practices. They may be difficult to maintain and upgrade due to their complexity and interdependencies. These systems can be a major roadblock to innovation and can cause major issues when they fail.

Product-led development methodologies can provide a solution for modernizing legacy systems. Here are some ways to apply product-led principles to legacy systems.

Start with Customer Discovery

The first step in product-led development is to understand the needs and problems of the end-users. This might sound easy at first because you already do have customers using your product. The problem will be to find out which problem your software is solving. Customers will be certainly able to tell you which feature set they are using, but the question to ask is: Why.

In the context of legacy system modernization, it’s important to understand how the legacy system is currently meeting the needs of the end-users, what are the current pain points, and how they would like the system to be improved. This information can help guide the modernization efforts and ensure that the end-users’ needs are met.

This can be done through various user research methods, such as surveys, interviews, or usability tests.

Define Clear Goals and Priorities

Clear goals and priorities should be defined for the modernization project. The goals should align with the overall business strategy and consider the limitations and constraints of the legacy system. It’s important to prioritize the needs of the end-users and ensure that the modernization efforts are focused on providing value to them. Clear goals and priorities help to ensure that the modernization project stays on track and that the efforts are focused on the most important areas.

Leverage Agile Development

Agile development is an iterative development process that focuses on delivering small, incremental changes. This approach can be applied to modernizing legacy systems by breaking down the system into small, manageable pieces and focusing on one piece at a time. Agile development helps to ensure that the modernization efforts are focused, and that progress is being made in a timely manner. It also helps to ensure that the modernized system is meeting the needs of the end-users.

This step might be the biggest change for your customers. In an agile approach your customer is heavily involved in the whole development process as they know best if your product is solving any of their problems. Very often this expanded customer interactions is new for both the software developers and the customer. But the change will be worth it, as you gain understanding of the customers problems, and your customers trust in solving them.

Measure Success with Metrics

Metrics are used to track the performance of the product and the impact it has on the end-users. This approach can be applied to modernizing legacy systems by setting up metrics that track the impact of the new features or designs on the end-users. Metrics can help to ensure that the modernized system is providing value to the end-users and that the modernization efforts are on track. They can also help to identify areas for improvement and guide future modernization efforts.

Product Lifecycle Agreement

The product lifecycle strategy for legacy products in a product-led development involves managing the product from its introduction to the market to its eventual end-of-life (EOL) phase. Legacy products are those that have been in the market for a long time and may no longer be actively developed or maintained but are still in use by a significant user base. Managing the product lifecycle of legacy products is essential to ensure that they continue to meet user needs and evolve with changing technologies. While the lifecycle of a product generally includes introduction and growth phases the focus for legacy products will be on the maturity and end-of-life phase. In the maturity stage, the product’s growth slows down as it reaches its peak level of adoption. The goal of this stage is to maintain the product’s market share and profitability by focusing on cost reduction and efficient production. During this stage, product development may be focused on maintaining the product’s reliability and stability, as well as addressing any compatibility or security issues that may arise. In the end-of-life stage, the product is no longer actively developed or maintained, but may still be in use by a significant user base. The goal of this stage is to manage the product’s EOL in a way that minimizes disruption for users and maximizes the value of the product for the company. During this stage, the company may consider offering support and maintenance services to existing users, as well as providing recommendations for alternative products or upgrades.

It is important to have a transparent and well communicated (for developers as well as customers) product lifecycle plan. For legacy products it is very important to have and idea of the end-of-life. Without a clear end-of-life strategy customers will either request innovation and change on a product you cannot maintain any more or just leave your product portfolio at all because the market will easily overtake you.


Product-led development can provide a solution for modernizing legacy systems by focusing on the needs, desires, and problems of the end-users. Starting with customer discovery, defining clear goals and priorities, focusing on leveraging agile development, and measuring success with metrics can all help to ensure a successful modernization project. By taking a product-led approach to legacy system modernization, organizations can become more efficient, reduce costs, and stay ahead of the competition.

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