ELI5: qa testing

high confidence

April 1, 2026tech

// explanation

// eli5

What is QA testing?

QA testing is like being a quality inspector at a toy factory [2][4]. Before toys go to kids, someone checks that they work properly, don't have broken parts, and do what they're supposed to do. In software, QA testers check that computer programs work the way they should before people use them [2][4].

Why does it matter?

Imagine if you bought a video game that crashed every 5 minutes—that would be terrible! [5] QA testers find these problems first, so when you use an app or website, it actually works right [4]. Without QA testing, software would be buggy and frustrating [5].

What does a QA tester do?

A QA tester uses the software like a regular person would, but they're looking for anything that goes wrong [4]. They might click buttons in weird ways, try entering bad information, or push the program to its limits to see if it breaks [2]. They write down everything that doesn't work so programmers can fix it [2].

How has testing changed?

Many companies are starting to have regular programmers test their own code instead of hiring special QA people [3]. This is because testing tools have gotten smarter and automated, so you don't always need a person clicking around [3].

// sources

[1]Is software testing/QA still a good carrer choice - Reddit

Oct 27, 2023 ... Testing is a good way to get started in tech but I advise people not make a career of it. If you start in QA your objective should be to learn ...

[2]What is QA Testing? The Backbone of Reliable Software Solutions

Mar 4, 2025 ... QA testing is a structured process to ensure a product meets set requirements and quality standards. It involves creating quality metrics, setting benchmarks, ...

[3]Devs, are you expected to do 100% of manual QA? Are there ...

May 17, 2022 ... Bringing in QA testers eased burdens but is going against the cultural direction and as such we are switching back to no manual QA testing; only ...

[4]QA Testing: Beginner's Guide to Quality Assurance - Upwork

Oct 7, 2025 ... What is QA testing? Quality assurance (QA) testing is the process of evaluating a software product to ensure it meets required standards before ...

[5]What Is a QA Tester? Skills, Requirements, and Jobs in 2026

Dec 9, 2025 ... QA testing makes it possible for products to grow safely. Scalability is important to QA testers. A key part of their role is to ensure added ...

[6]Software Testing Explained in 100 Secondsvideo

Video by Fireship