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The code integral to the original website or web application becomes obsolete or difficult to maintain. Any such code inherited from the original developers that become irrelevant is called a Legacy Code.
Legacy code may not respond to automated testing or may resist modification. Tampering with the code could cause the application to malfunction. We are discussing the major issues with the way we handle legacy codes.
It’s sobering to think that the coding we write today and which performs beautifully will become legacy code when new systems, applications, and technology take over. Here we explain what is the legacy system and how we can distinguish three types of legacy code.
Our focus will be on the second type of legacy code and the issues we face in maintaining the code.
Companies with legacy technology issues face the dilemma of maintaining or upgrading systems. The solution depends on the kind of issues compromising operations efficiency.
A company saddled with legacy code and facing the issues discussed is said to be carrying a substantial technical debt or burden.
Technical debt is the sum of all future development costs you will incur to keep the legacy code in maintainable condition. Technical debt applies not just to the developers you engage in tinkering with the code but to all the changes that you make to operating systems, the website or applications, and the IT architecture.
When you handle legacy code, your financial debt piles up over time. If the software is treated as an asset, the technical debt becomes the liability.
Legacy code may leave systems unprotected and susceptible to cyberattack. Equifax, the credit rating agency, was hacked, and the personal data of millions of people got stolen in 2017. The hackers exploited a legacy code vulnerability dating back to the 1970s. The clean-up cost more than $1 billion, and consumer faith evaporated.
Read This: Best Cyber Security Software in 2022: an Overview
Refactoring the legacy code refers to debugging, bringing clarity, and cleaning up the code. If you employ committed in-house IT staff or outsourced professionals, this creates a higher financial burden.
Companies grappling with significant legacy code issues are spending more than 50 percent of their time trying to understand the code and how it works. The challenge lies in cleaning legacy code without altering the behavior of the overlapping application or website.
Regardless of the nature of the issues revolving around legacy code or the size of technical debt, you have options that will work for you. Test-Driven Development (TDD) helps add new useful features that enhance efficiency without compromising the application’s stability. Refactoring done with professional assistance makes code readable and dramatically improves IT architecture and performance.
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