How to define quality assurance systems?

A quality assurance system is a planned and systematic pattern of all actions necessary to provide adequate confidence that the item or product conforms to established technical requirements.

It is the sum total of all the things which contribute to ensuring the capability of the organization to deliver information which is for to be used for the purpose for which it is intended.

They include the inspection, testing, and monitoring activities of quality control programs, along with additional activities that are devoted to prevention of food safety hazards and quality defects.

The activities are integrated and interrelated to form a system. Quality assurance systems are intended to provide confidence to a food company’s management.

Quality assurance provides customers and consumers with the assurance that food quality food safety requirements will be met.

These quality systems include documents that describe operations and activities that directly relate to food quality and safety.

In companies that operate with quality management systems, the quality activities are integrated into the quality management system.

Quality assurance is an advisory function, not a police function. It is not responsible for the quality program, it does not operate the system, and it does not do quality control.
How to define quality assurance systems?