Quality Assurance Vs. Quality Control

What is Quality Assurance ?

Quality assurance (QA) is a way of preventing mistakes or defects in manufactured products and avoiding problems when delivering solutions or services to customers.
(Source: https://en.wikipedia.org/wiki/Quality_assurance)

What is Quality Control ?

Quality control (QC), is a process by which entities review the quality of all factors involved in production.
(Source: https://en.wikipedia.org/wiki/Quality_control)

Quality Assurance (QA) Vs. Quality Control (QC)

• QA is a Proactive activity and done before the product is manufactured or services are delivered.
  But QC is a Reactive activity and done during or after the manufacturing process.
• QA is process oriented.
  But QC is product oriented.
• QA focuses on prevention of defects to improve quality.
  But QC focuses on detection of defects to improve quality.

QA vs. QC facts are extracted from the following video
(https://www.youtube.com/watch?v=gxwIfiQTPBw)