Question: What is the difference between quality control and quality assurance?
Answer: It is important for an organisation to agree on what the meanings of Quality Assurance (QA) and Quality Control (QC). Both form an integral part of the organisation’s quality management plan, and the effectiveness of delivery teams relies on the differences being well understood by all stakeholders, including management.
Effective quality systems can contribute enormously to the success of projects, but the counterpoint is that, when poorly understood, the quality systems are likely to be weak and ineffective in ensuring that the delivered system is delivered on time, built by the team within their allocated budget, and satisfies the customer’s requirements.
Quality is extremely hard to define and it is simply stated “Fit for use or purpose”. It is all about meeting the needs and expectations of customers with respect to functionality, design, reliability, durability, & price of the product.
Sometimes, QC is confused with the QA. Quality control is to examine the product or service and check for the result. Quality assurance is to examine the processes and make changes to the processes which led to the end-product.
Tool Identification and selection
Training of Quality Standards and Processes （Author: Monica Schrader From: Quora）