What is the difference between quality assurance(QA) and quality control(QC)?

Quality Assurance                                                                  

• Analyse the software development process.                                
• Intend to prevent defects.                                                            
• It is a way to manage quality verification.                                  
• QA activities are the responsibility of whole the team involved in software development life cycle.  
•  It is a preventive technique.
• Focus to provide assurance that quality requested will be achieved.                                           

Quality Control

• Analyse quality of the product .
• Intend to identify and fix defects.
•  It is a way to verify the quality  validation. 
• QC activities are the responsibility of whole the testing team involved in software testing life cycle.
• It is a corrective technique. 
• Focuses on achieving the quality requested.