Introduction: What Is Software Testing? Software testing is the process of evaluating and verifying that a software application or system performs as expected. It plays a critical role in ensuring code quality, security, and user satisfaction. In modern development environments where fast releases and continuous integration are the norm, testing is not just helpful — it’s essential. Why Testing Matters Poorly tested software can lead to bugs, crashes, security breaches, and even business failure. Here’s why software testing is non-negotiable: Quality Assurance: Catch bugs early before they reach production. Cost Efficiency: Fixing bugs in early development is much cheaper than after deployment. Security: Prevent vulnerabilities and data leaks. User Experience: Deliver smooth, reliable applications that meet user expectations. Confidence to Deploy: Deploy with peace of mind, especially in CI/CD pipelines. Types of Software Testing There are various types of software testing, each serving a unique purpose: Type 💬 Purpose Unit Testing Test individual functions or methods in isolation. Integration Testing Ensure that different parts of the system work together. Functional Testing Verify that features work as expected from the user’s perspective. End-to-End (E2E) Testing Simulate user behavior across the entire application. Performance Testing Measure how the system performs under load. Security Testing Identify vulnerabilities in authentication, authorization, etc. Regression Testing Make sure new changes don’t break existing functionality.