Lessons learned about Software Quality (or delivery?)

Below are a few statements/assumptions that would help me explain the idea and the goal of this post:

• We build software to solve problems for our customers or for people in general
• It is important that the software is built and delivered in a reasonably short time
• It is important that the software is built and delivered with a reasonable quality
• There are lots of methods and ways of working to develop software, and there is no single way that is correct for all…