Development is the environment where software is actively built, changed, and tested before it is released to real users. Developers use it to experiment, fix bugs, add features, and check that everything works correctly.
A development environment is usually kept separate from production, so mistakes do not affect the live system.
Why it matters
Developers need somewhere safe to make changes. In development, they can break things, reset data, test new ideas, and run unfinished code without disrupting real users.
This separation also helps prevent developers from accidentally changing live data or services while working on the application.
How it works
A development environment may run on a developer's own computer or on a shared server. It often uses its own:
- Database
- Configuration
- Environment variables
- Test accounts and sample data
- External service credentials
For example, an online store in development might use fake customers, fake orders, and a test payment system instead of processing real money.
Development vs production
Development is where software is built and tested. Production is where the finished software is used by real users.
The code may be almost identical in both environments, but the configuration, data, credentials, and connected services are usually different.