In your words, what is quality?

Quality is the degree to which a product or service meets the requirements and expectations of users. In the context of software development, quality means that the product works correctly, stably, safely, and is user-friendly.

Quality includes:

• Functionality — the product performs the declared functions.
• Reliability — minimal errors and failures.
• Usability — the interface is intuitive and understandable.
• Performance — meets speed and resource requirements.
• Maintainability — the code is easy to modify and extend.

Example: if an authorization application has high quality, the user will be able to log in quickly and without errors, receive understandable error messages, and will not encounter freezes or crashes.