Difference between Quality Assurance and Quality Control

• Quality control relates to a specific product or service.
• Quality control verifies whether specific attribute(s) are in, or are not in, a specific
product or service.
• Quality control identifies defects for the primary purpose of correcting defects.
• Quality control is the responsibility of the team/worker.
• Quality control is concerned with a specific product.

• Quality assurance helps establish processes.
• Quality assurance sets up measurement programs to evaluate processes.
• Quality assurance identifies weaknesses in processes and improves them.
• Quality assurance is a management responsibility, frequently performed by a staff
function.
• Quality assurance is concerned with all of the products that will ever be produced by a
process.
• Quality assurance is sometimes called quality control over quality control because it
evaluates whether quality control is working.
• Quality assurance personnel should never perform quality control unless it is to
validate quality control.