Software Engineering basics - quality factors of Boehm’s model

Boehm’s model (proposed by Barry Boehm in 1978) identifies 7 key quality factors that help measure how "good" software is. Think of these as the important features you’d want in any software to make it useful, reliable, and long-lasting.

1. Portability

Can the software run in different environments?

It should work on different operating systems, hardware, or networks.
Example: A game that runs on Windows, Mac, and Linux is portable.

2. Reliability

Does the software work correctly without crashing?

It should perform well under different conditions and handle errors properly.
Example: A calculator app that always gives correct results and doesn’t freeze is reliable.

3. Efficiency

Is the software fast and does it use resources wisely?

It should not waste memory, CPU, or battery.
Example: A web browser that loads pages quickly without slowing your device is efficient.

4. Usability

Is the software easy to learn and use?

The interface should be simple, clean, and user-friendly.
Example: A music app with clear icons and simple navigation is usable.

5. Testability

Is it easy to test the software for bugs?

You should be able to check if each part of the code works correctly.
Example: A program with well-labeled functions and clear input/output makes testing easier.

6. Understandability

Can developers easily understand how the software works?

Code should be well-written, documented, and logically structured.
Example: Code with comments and clear variable names is understandable.

7. Flexibility

Can the software be changed or updated easily?

It should be easy to modify if requirements change.
Example: An app where you can add new features without breaking existing ones is flexible!