KPIs for Product Managers

KPIs for Product Managers: product code maintainability

In this article, we'll explore the importance of product code maintainability as a key performance indicator (KPI) for product managers.

In today's fast-paced technology-driven world, product managers must keep a close eye on the performance of their products to ensure that they stay relevant and meet the evolving needs of their users. One of the most critical aspects of product performance is the maintainability of the product code. But what is code maintainability, and why is it so important? In this article, we'll explore the concept of code maintainability, the impact it can have on product success, and the role of product managers in maintaining it.

Understanding the Importance of Code Maintainability

Code Maintainability is the ability of a software product to undergo modifications and updates with minimal effort while maintaining its quality. It is critical because it affects the longevity of a product's lifecycle, its scalability, its cost of ownership, and its ability to remain competitive. Unfortunately, many product managers pay little or no attention to maintainable code until there is a significant problem.

As software products become more complex, maintainable code becomes increasingly important. Code that is difficult to maintain can lead to a host of problems, including bugs, downtime, and decreased productivity. In contrast, maintainable code can help ensure that a product remains competitive and successful over the long term.

Defining Code Maintainability

Code maintainability encompasses various factors, including the code's readability, its testability, its modular structure, and its adherence to coding standards. The aim is to make code maintenance as easy as possible by minimizing the time and effort it takes to fix bugs, add new features, and enhance functionality.

Readability is one of the most critical factors in code maintainability. Code that is easy to read and understand is easier to maintain. Similarly, testability is vital because it allows developers to quickly identify and fix problems. Modular structure is also essential because it allows developers to work on specific parts of the code without affecting the rest of the system. Finally, adherence to coding standards ensures that the code is consistent and easy to understand.

The Impact of Maintainable Code on Product Success

A product with maintainable code has a better chance of succeeding in the market. It can be modified quickly and efficiently, reducing downtime and improving the product's time-to-market advantage. Additionally, developers working with maintainable code can discover and fix problems quickly, freeing up more time to focus on innovation and creating new features.

Maintainable code can also help reduce the cost of ownership. Code that is difficult to maintain can be expensive to update, and it can also lead to increased downtime and lost productivity. In contrast, maintainable code can help reduce the cost of ownership by making it easier to fix bugs and add new features.

The Role of Product Managers in Code Maintainability

Product managers have a critical role in ensuring that their product code is maintainable. They must communicate the importance of maintainable code across the entire development team, set coding standards, and ensure that the code adheres to them. They must also incorporate code maintainability into the product's KPIs and metrics, track progress, and provide feedback to the development team to ensure that work is being done correctly.

Product managers must also work closely with developers to ensure that they have the tools and resources they need to create maintainable code. This includes providing training on coding standards and best practices, as well as ensuring that developers have access to the latest tools and technologies.

In conclusion, code maintainability is a critical factor in the success of a software product. Product managers must prioritize maintainable code and work closely with developers to ensure that it is achieved. By doing so, they can help ensure that their product remains competitive and successful over the long term.

Key Performance Indicators for Code Maintainability

As software development continues to grow in complexity, it's becoming increasingly important to focus on code maintainability. Code maintainability refers to the ease with which developers can modify and update code over time. It's a crucial aspect of software development, as it can impact everything from development timelines to the quality of the final product.

Now that we understand the importance of code maintainability, it's essential to identify the key performance indicators (KPIs) that product managers can use to track it. Here are some of the KPIs to consider:

Code Complexity Metrics

Code complexity metrics measure the complexity of the codebase, including the number of functions, lines of code, and cyclomatic complexity. High complexity is a sign that the code is harder to understand and maintain. This can lead to longer development timelines, as developers spend more time trying to understand the code and make updates. Additionally, high complexity can increase the risk of introducing bugs into the code, as developers may not fully understand how changes to one part of the codebase can impact other parts.

Code Coverage Metrics

Code coverage metrics measure how much of the codebase is covered by tests. Higher code coverage increases the level of testability and reduces the chance of introducing bugs into the code. This is because tests can help catch issues before they make it into production. Additionally, tests can help developers understand how different parts of the codebase work together, making it easier to maintain the code over time.

Code Churn Metrics

Code churn metrics measure the amount of code changes that occur over a specific time frame. Higher churn rates can lead to the development of additional technical debt, making it harder to maintain the code in the long term. This is because developers may be making frequent changes to the codebase without fully understanding how those changes impact other parts of the code. This can lead to a situation where the code becomes harder and harder to maintain over time, eventually leading to a situation where it's no longer feasible to continue development.

Code Review Metrics

Code review metrics track the frequency and quality of code reviews, including how many issues are discovered and fixed. Code reviews can help identify potential issues early on, improving code quality and reducing the risk of bugs and costly rework. Additionally, code reviews can help developers understand different parts of the codebase, making it easier to maintain the code over time. By tracking code review metrics, product managers can ensure that developers are taking the time to review each other's code and that the codebase is being maintained at a high level of quality.

Overall, there are many different KPIs that product managers can use to track code maintainability. By focusing on these KPIs, product managers can ensure that the codebase is being maintained at a high level of quality, reducing the risk of bugs and other issues over time.

Implementing Best Practices for Maintainable Code

Writing code that is maintainable is an essential aspect of software development. When code is maintainable, it is easier to update, debug, and enhance. In this article, we will explore some of the best practices for ensuring code maintainability.

Establishing Coding Standards

Establishing coding standards is a crucial step in ensuring code maintainability. Coding standards help ensure that every developer writes code that adheres to a consistent set of guidelines. This consistency reduces the likelihood of introducing unrelated bugs and makes it easier for developers to collaborate seamlessly. Coding standards can cover a wide range of topics, including naming conventions, code formatting, and commenting practices.

It's important to note that coding standards should be regularly reviewed and updated to reflect changes in the industry and the organization's needs. The development team should be involved in establishing and maintaining coding standards to ensure they are practical and achievable.

Encouraging Regular Code Reviews

Regular code reviews are an essential aspect of maintaining code quality. Code reviews help identify potential issues early on, improve code quality, and reduce the risk of bugs and costly rework. They provide an opportunity to learn from other developers and improve coding skills.

Code reviews should be conducted regularly, and all developers should be encouraged to participate. Code reviews can be conducted in various ways, such as pair programming, peer reviews, or automated code reviews. The important thing is to ensure that code reviews are a regular part of the development process.

Prioritizing Technical Debt Management

Technical debt is the accumulation of effort required to maintain code quality. Technical debt can accumulate due to various reasons, such as tight deadlines, changing requirements, or a lack of resources. Prioritizing technical debt management reduces the risk of introducing new bugs and minimizes the time it takes to maintain and improve code quality.

Technical debt management involves identifying technical debt, prioritizing it, and developing a plan to address it. Technical debt can be managed by allocating time and resources to address it, using tools to automate code quality checks, or by refactoring code to improve its quality.

Promoting a Culture of Continuous Improvement

Promoting a culture of continuous improvement is essential for maintaining code quality. Continuous improvement is the practice of regularly identifying areas for improvement and implementing changes that enhance product quality and maintainability. A culture of continuous improvement encourages appropriate feedback, iterating through processes, and promoting experimentation.

Continuous improvement can be achieved by regularly reviewing processes, identifying areas for improvement, and implementing changes based on feedback. It's important to create an environment where developers feel comfortable suggesting changes and experimenting with new ideas.

By implementing these best practices, you can ensure that your code is maintainable, scalable, and of high quality. Writing maintainable code is essential for building software that can adapt to changing requirements and provide value to your users.

Tools and Techniques for Measuring Code Maintainability

Measuring code maintainability is crucial for product managers. Fortunately, there are various tools and techniques available to help measure maintainability.

Static Code Analysis Tools

Static code analysis tools scan the codebase and flag potential issues, such as syntax errors, coding mistakes, and code smells. This process identifies areas requiring attention, making it easier for developers to identify and fix issues.

Code Coverage Tools

Code coverage tools measure how much of the codebase is covered by tests. Higher code coverage increases the level of testability and reduces the chance of introducing bugs into the code.

Code Review Platforms

Code review platforms make it easier for developers to collaborate on code reviews and provide feedback. They help improve code quality, reduce the risk of bugs and costly rework and provide an opportunity for developers to learn from each other.

Project Management and Tracking Tools

Project management and tracking tools help track the progress of code maintainability over time. They make it easy to monitor KPIs, identify areas requiring attention and provide feedback to developers.


In summary, maintaining code quality and promoting maintainable code are critical aspects of product success. Product managers play a crucial role in ensuring that products are maintainable, by setting coding standards, tracking KPIs, prioritizing technical debt management and promoting a culture of continuous improvement. Additionally, measuring code maintainability using tools like static code analysis and code review platforms makes it easier to identify areas requiring attention, track progress and provide feedback to developers. By following best practices and prioritizing maintainability, product managers can ensure that their products remain competitive, scalable and efficient.