| Definition | 
			QA is a set of activities for ensuring quality in the processes by which products are developed. | 
			QC is a set of activities for ensuring quality in products. The activities focus on identifying defects in the actual products produced. | 
		
		
			| Focus on | 
			QA aims to prevent defects with a focus on the process used to make the product. It is a proactive quality process. | 
			QC aims to identify (and correct) defects in the finished product. Quality control, therefore, is a reactive process. | 
		
		
			| Goal | 
			The goal of QA is to improve development and test processes so that defects do not arise when the product is being developed. | 
			The goal of QC is to identify defects after a product is developed and before it's released. | 
		
		
			| How | 
			Establish a good quality management system and the assessment of its adequacy. Periodic conformance audits of the operations of the system. | 
			Finding & eliminating sources of quality problems through tools & equipment so that customer's requirements are continually met. | 
		
		
			| What | 
			Prevention of quality problems through planned and systematic activities including documentation. | 
			The activities or techniques used to achieve and maintain the product quality, process and service. |