What is the difference between Functional and Non-Functional Testing?

Functional testing verifies whether a software application meets its intended requirements by checking features like user inputs, APIs, and database interactions. On the other hand, non-functional testing evaluates aspects like performance, security, scalability, and usability. While functional testing ensures correct operation, non-functional testing focuses on the system’s efficiency and overall user experience.

What are the main goals of Functional Testing?

The primary goals of functional testing are to validate that the software meets business requirements, ensure all functionalities work as expected, and identify defects early. It focuses on testing system behavior, user interactions, and data integrity. The goal is to deliver a reliable, high-quality application that performs its intended functions without errors.

What are the benefits of Functional Testing?

Functional testing enhances software quality by identifying defects early, ensuring compliance with business requirements, and improving UX. It allows businesses to prevent costly post-release issues, increases reliability, and ensures seamless integration of features.

How does Functional Testing differ from Regression Testing?

Functional testing verifies whether software features work as expected based on requirements, while regression testing ensures that recent code changes do not introduce new defects. Functional testing is performed early in development, whereas regression testing is conducted after updates, enhancements, or bug fixes to maintain stability.

Why is functional testing important for small, medium, and large-sized businesses?

Functional testing is crucial for businesses of all sizes as it ensures software reliability, reduces operational risks, and enhances user experience. Small businesses benefit from early defect detection, medium-sized firms maintain consistent application performance, and large enterprises ensure seamless scalability.

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