What approaches to software development do you know?

There are several approaches to software development, including:

• Waterfall — a sequential approach where development stages follow one after another.
• Agile — a flexible approach with iterative development and continuous feedback.
• DevOps — combining development and operations for fast and reliable software delivery.
• TDD (Test-Driven Development) — development through writing tests before code.
• BDD (Behavior-Driven Development) — an extension of TDD focusing on system behavior.

Each of these approaches helps improve quality and speed of development depending on the project context.