Product Management Dictionary

The Product Management Dictionary: feature toggling

Learn about feature toggling, a key concept in product management, with our comprehensive guide.

Welcome to The Product Management Dictionary, where we dive deep into essential concepts and terms that every product manager should know. In this article, we’ll explore feature toggling, a method that can help your team deliver new features, faster, without compromising on quality. Whether you’re a new or seasoned product manager, this comprehensive guide will help you understand the ins and outs of feature toggling and how to use it for your product development projects.

Understanding Feature Toggling

Feature toggling, also known as feature flags or feature switches, is a technique used in software development to enable and disable a feature in a product or application. It’s a way to release new functionality gradually and selectively rather than all at once. By using feature toggles, you can control which users get access to a feature, allowing you to test, validate, and gather feedback before a full release.

Feature toggling is a powerful tool that can help product teams move faster and with more flexibility. It allows developers to release new features with confidence, knowing that they can quickly turn them off if anything goes wrong. This technique has become increasingly popular in recent years, as software development teams strive to deliver new features more quickly and with higher quality.

Definition and Purpose

Feature toggling is a tool that helps product teams move faster and with more flexibility. The core purpose of using feature toggling is to reduce risk and uncertainty associated with delivering new features. It allows product teams to roll out new functionality to a subset of users, validate it, and then release it to everyone once it’s stable.

Feature toggling is particularly useful when working on complex projects with many moving parts. It allows developers to test and validate new features in isolation, without disrupting the rest of the system. This can be especially helpful when working on large, mission-critical projects where even small mistakes can have significant consequences.

Benefits of Feature Toggling

There are many benefits to using feature toggles. Some of the key benefits include:

  • Reducing the risk of delivering new features: By releasing new features gradually and selectively, you can minimize the risk of introducing bugs or other issues into your codebase.
  • Gaining feedback from users early in development: By releasing new features to a subset of users, you can gather feedback and make improvements before releasing the feature to everyone.
  • Ensuring quality and performance by testing new features with a limited set of users: By testing new features with a limited set of users, you can ensure that they are stable and performant before rolling them out to everyone.
  • Rolling out features gradually to avoid overwhelming users: By gradually releasing new features, you can avoid overwhelming your users with too much change at once.
  • Being able to make changes to a feature or turn it off quickly in case of any problems: By using feature toggles, you can quickly turn off a feature or make changes to it in case of any problems or issues.

Common Use Cases

Feature toggling can be used in a variety of use cases, including:

  • A/B testing: testing two versions of a feature with different groups of users. This can be particularly helpful when trying to optimize user experience or increase engagement.
  • Progressive releases: gradually releasing a feature to users over time. This can help ensure that the feature is stable and performant before releasing it to everyone.
  • Experimentation: trying out a new idea or feature to see how it performs before investing fully. This can be especially helpful when working on innovative or experimental projects.
  • Deployment flexibility: enabling and disabling features without requiring a new deployment. This can save time and resources when making changes to your application.
  • Controlling access: granting access to specific groups of users, such as beta testers or premium subscribers. This can help you gather feedback from specific user groups and tailor your product to their needs.

Overall, feature toggling is a powerful technique that can help product teams move faster and with more confidence. By using feature toggles, you can reduce risk, gather feedback, and ensure that your features are stable and performant before releasing them to everyone.

Implementing Feature Toggles

Implementing feature toggles can be a powerful tool for software developers to control the release of new features. By using feature toggles, developers can release new features gradually, test them with a small group of users, and then roll them out to a wider audience. However, implementing feature toggles requires careful planning and execution to ensure a smooth rollout.

Here are some key considerations to keep in mind when implementing feature toggles:

  • Types of Feature Toggles: There are several types of feature toggles that you can use depending on your use case. The most common types include:
    • Boolean: Toggling a feature on or off.
    • Percentage Rollout: Rolling out a feature to a percentage of users.
    • Targeted Rollout: Rolling out a feature to specific groups of users.
    • Time-based: Enabling a feature for a set period of time (e.g., during a promotion).
  • Feature Toggle Frameworks and Tools: There are several frameworks and tools available to help you implement feature toggles effectively. Popular options include:
    • LaunchDarkly: A feature flag management platform that allows developers to control the release of new features.
    • FeaturePeek: A tool that enables developers to preview new features before they are released to the public.
    • Feature Flags: A library that provides a simple way to implement feature flags in your code.
    • A feature flag management platform that allows developers to control the release of new features and measure their impact.
  • Best Practices for Implementation: Here are some best practices to follow when implementing feature toggles:
    • Keep Toggles Simple and Granular: Toggles should be easy to understand and should control a single feature.
    • Use a Naming Convention That’s Easy to Understand: Toggles should be named in a way that makes it clear what they control.
    • Avoid Using Toggles for Non-functional Requirements: Toggles should only be used for controlling the release of new features, not for controlling non-functional requirements like performance or security.
    • Test Toggles Before Deploying: Toggles should be thoroughly tested before they are deployed to ensure that they work as expected.
    • Monitor Toggle Usage and Performance: Toggles should be monitored to ensure that they are being used correctly and that they are not causing performance issues.

By following these best practices and using the right tools, developers can implement feature toggles effectively and ensure a smooth rollout of new features.

Managing Feature Toggles

Feature toggles are an essential tool for any software development team. They allow you to turn features on and off without having to deploy new code, which can save time and reduce risk. Once you’ve implemented feature toggles, it’s important to manage them effectively to ensure they continue to deliver value.

Organizing and Documenting Toggles

Organizing and documenting toggle usage can help ensure efficient communication within your team. Here are some tips:

  • Assign a responsible owner for each toggle. This will help ensure that someone is accountable for the toggle’s usage and can answer any questions that come up.
  • Track the status of each toggle (i.e., on/off) and its history. This will help you understand how the toggle has been used in the past and make informed decisions about its future usage.
  • Use clear naming conventions to ensure everyone understands what the toggle does. This will help prevent confusion and ensure that the toggle is used correctly.

By following these tips, you can ensure that your team is using feature toggles effectively and efficiently.

Monitoring and Analyzing Toggle Performance

Monitoring toggle performance can help you ensure that it’s delivering the desired effect. Here’s how:

  • Monitor toggle usage to ensure that they’re still being used according to plan. If a toggle is no longer being used as intended, it may be time to reevaluate its purpose.
  • Monitor toggle performance to ensure optimal performance. If a toggle is causing performance issues, it may be time to make some changes.
  • Remove out-of-date toggles. If a toggle is no longer needed, it’s important to remove it to maintain code quality and reduce complexity.

By monitoring and analyzing toggle performance, you can ensure that your feature toggles are delivering the desired results and are not causing any unintended consequences.

Removing Outdated Toggles

When toggles are no longer needed, it’s important to remove them to maintain code quality and reduce complexity. Here are some tips:

  • Keep a list of all toggles, including those that are no longer needed. This will help you keep track of all the toggles in your codebase.
  • Regularly review toggles to identify those that can be removed. By reviewing your toggles on a regular basis, you can identify any that are no longer needed.
  • Remove toggles as soon as they’re no longer needed to ensure optimal performance. The longer a toggle is left in the codebase, the more complex the code becomes.

By following these tips, you can ensure that your codebase remains clean and efficient, and that your feature toggles continue to deliver value.

Feature Toggling in Agile Development

Feature toggling can be particularly useful in Agile development environments. Here are some key strategies:

Continuous Integration and Deployment

Feature toggling can help you deploy new features more quickly and efficiently:

  • Use continuous integration and deployment to test and deploy new features quickly
  • Use feature toggles to disable features that are not ready for release
  • Release frequently and in small batches to minimize risks and ensure quality

A/B Testing and Experimentation

Feature toggles can be used to test and experiment with multiple versions of a feature:

  • Use A/B testing to compare the effectiveness of two or more versions of a feature
  • Experiment with new features or ideas on a small scale first before committing to a full release
  • Use feature toggles to enable or disable versions of a feature

Balancing Speed and Stability

Using feature toggles effectively requires balancing speed and stability:

  • Release features gradually to minimize risks
  • Monitor closely and react quickly to any issues that arise
  • Review and prioritize requests for new features to ensure they align with business goals


Feature toggling is a powerful technique that can help product teams move faster and with more flexibility. By using feature toggles strategically, product managers can reduce risk and uncertainty associated with delivering new features, test and validate new functionality, and gain early feedback from users. To use feature toggles effectively, it’s important to implement them thoughtfully, manage them attentively, and use them strategically to meet your product goals.