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QA Fundamentals

Quality Control (QC)

Product-oriented activities focused on detecting defects in the finished product.

Full definition

Quality Control (QC) is a reactive, product-oriented approach focused on identifying defects in the final product through inspection and testing. Unlike QA (which prevents defects), QC finds defects that already exist.

QC activities include:

  • Executing test cases
  • Code reviews
  • Inspections and walkthroughs
  • Static analysis
  • Testing at various levels (unit, integration, system)

The relationship: QA sets up the processes, QC executes the checks, and testing is the most common QC technique.

Learn more about quality control (qc) in practice

Manual Testing track