concept code " ilitie in category agile

This is an excerpt from Manning's book Agile Metrics in Action: How to measure and improve team performance. Login to get full access to this book.

8.2. Measuring the NFRs through the code “ilities”

The code “ilities,” or non-functional requirements^[1] (NFRs), are a set of properties that describe how well software is built. These aren’t anything new; any software engineer should be familiar with them and how they indicate the quality of software. Here are some examples of non-functional requirements that indicate how well-built software is:

Figure 8.1. The code “ilities” illustrated through the life of a software product