QA & QC: Alike, But Not The Same!

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Two peas in one pod

QuestionsBeing to major parts of an organizations quality plan these areas are drastic to success of every single project. Effective usage of these disciplines is curtail by all means. Lot’s may go wrong caused by confusion. Things like the project not matching deadlines, does not satisfy the requirements of the customer, does not fit in budget, etc. This article will show you the differences, thus you can make sure every team in your business is operating within your requirements and are put to their best.

So there are two key differences that need to be highlighted:

  • QC is what you use to make sure all went well. Its purpose is verification of the complete product.
  • QA on the other hand is something that flows with the development project. It is actually the process of managing quality.

Misunderstanding and unappropriated usage of these concepts can lead to devastating results. Let’s consider the situation when QA was done perfectly, the entire process was full of test cases and fixes, every single part of code was functioning as a clock. But you forgot QC. The end product was never checked, the combined parts of code created some bugs, devastating ones, the product release is ruined, all deadlines are compromised and voila the team is at the looser side of the table.

The same might happen if one relies on QC only. So the work is done (so you think) and yet the final check shows that your software refuses to operate properly whatever you do. The team does not have time to develop fixes, the deadlines are missed and we return to our first scenario. At least now you already know where the seats at the looser side are located.


Quality Assurance is something filled with tons of papers, documentation, test-cases, fixes an e-mails. Its general purpose is preventing bugs or related issues to be anywhere around the software in the first place. If said in other words QA is a process of assurance the requested level of quality is being met.


Quality Control is a mean of final verification. It consists of every operational technique and activity that is being in use for fulfilling quality requirements. The mentioned techniques as well as activities are pre-discussed with the customers.