Is QA important during development?

Good day. You are faced with a situation where you have not been given the quality assurance that you need to ensure stable operation and most importantly the correct and expected operation of every process and unit of your product. I advise you to read the article why qa is important on the syndicode website. They are experienced in the field of development, so they know why software quality assurance is always necessary, and regular checks and fixes will work in your favor.

I don't even understand why the Jews do not understand the importance of product testing during development? I hope that when they read these blogs, they will understand why testing is important during development