Operations · business glossary
What is Quality control?
By Shivam Bhandari · Reviewed 31 October 2026 · How we write
definition
The systematic process of checking that products or services meet a defined standard before they reach the customer.
Quality control explained
Quality control is checking products or services to make sure they meet defined standards before reaching customers.
example
Inspecting every tenth batch of packaged snacks for weight, seal strength and taste.
why it matters
It protects reputation and avoids costly returns and recalls.
common mistake
Relying only on final inspection instead of building quality into each step.
Frequently asked questions
What is Quality control?
The systematic process of checking that products or services meet a defined standard before they reach the customer. Quality control is checking products or services to make sure they meet defined standards before reaching customers.
Why does Quality control matter?
It protects reputation and avoids costly returns and recalls.
What is a common mistake with Quality control?
Relying only on final inspection instead of building quality into each step.
Related terms
Six Sigma
A structured methodology for reducing errors and variation in a process to a very small, statistically defined tolerance.
SOP (standard operating procedure)
A documented, step-by-step process for how a task should be done, so quality stays consistent no matter who performs it.
Vendor management
The ongoing process of selecting, evaluating, and maintaining relationships with external suppliers.