What is Feature Toggle?
A configuration switch that lets you enable or disable features without deploying new code.
Why It Matters
Feature toggles let you release code safely, test with specific users, and quickly disable problematic features.
Real-World Example
Enabling a new checkout flow for 10% of users via a toggle, then increasing to 100% once verified.
“Understanding terms like Feature Toggle matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
Feature Flags
Switches that let you turn features on or off without deploying new code
Canary Deployment
Gradually rolling out a new version to a small percentage of users before making it available to everyone.
A/B Testing
Showing different versions of something to different users to see which performs better
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Related Terms
A/B Testing
Showing different versions of something to different users to see which performs better
Feature Flags
Switches that let you turn features on or off without deploying new code
Canary Deployment
Gradually rolling out a new version to a small percentage of users before making it available to everyone.
Full-stack
Working on both the frontend (what users see) and backend (the server and database) of an application
TypeScript
JavaScript with added type checking that catches errors before your code runs
JavaScript
The programming language that makes websites interactive and dynamic