Difference Between Quality Assurance vs Quality Control

Quality Assurance vs Quality Control QA vs QC

→ Many people think that the QA and QC are similar but that is not actually true.

→ Both are different from each other.

→ QA and QC are related to each other and both are part of Quality Management.

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Table of Content

QA vs QC

What is Quality?

Quality means conformance to the specification.

→ In easy language, we can say as the fulfillment of requirements.

→ Quality has many more meanings some of that are mentioned below.

The Different Meanings of Quality are:

  • It is a degree of excellence
  • Fit for purpose
  • Freedom from defects
  • Conformance of specifications
  • Value for customer
  • Doing the right thing at the right time

What is Assurance?

→ In general terms, assurance refers to a promise,  guarantee, or confidence.

→ Assurance involves the assessment and verification of quality, reliability, compliance, and effectiveness of any product, process, service, or system.

→ Also we can say that assurance means one type of confidence that ensures an error-free product or service.

What is Quality Assurance?

→ Quality Assurance is a set of systematic processes that ensure the quality and reliability of a product, process, service, or system.

→ Quality_Assurance is also known by the acronym QA.

→ QA helps us to establish and maintain various system standards, procedures, and guidelines to fulfill customer-specific requirements and expectations.

→ Quality_Assurance gives confidence in defect-free products or error-free service to the customer.

→ Examples of some of the QA activities are process design, documentation, and training.

→ In product development, QA activities include all the activities from the concept stage to the delivery stage.

→ Quality_Assurance identifies potential quality problems that may arise and create the problem so before that happens QA prevents it.

Key Activities Quality Assurance

→ Different QA activities are mentioned below to fulfill the customer's requirements.

  • Creation of the Auditing Standard
  • Creation of the Product Development Standard
  • SOP and WI Creation
  • Process Parameter Finalization

Key Elements of the Quality Assurance Program

→ Refer to the below-mentioned key elements of QA that help to improve the quality

  • Quality Standards and Procedures Preparation
  • Product, Process, and System Audits and Assessments
  • Training and Skill Development of all Employee
  • Process Development and Documentation
  • Continuous Improvement
  • Risk Assessment and Management
  • Supplier Quality Management

→ Successfully implementing the above-mentioned elements helps us to improve customer satisfaction and also leads to new businesses.

Quality Assurance Tools

→ Different types of QA tools that help to prevent defects or errors and make a system or process more robust.

Various Types of Audits are the QA tools.

→ Different QA tools are:

  • Process Audit
  • Product Audit
  • System Audit

What is Control?

→ The word control has different meanings, but generally, it refers to control of something.

→ Control means verifying actual results by comparing them with the defined standards or specifications.

→ In very easy language we can say that control means keeping something within a limit.

→ The meaning is changed as per its usage in different fields, situations, and contexts.

What is Quality Control?

→ Quality Control is a systematic approach to ensure that products or services meet customers' requirements.

→ Quality_Control is also known by the acronym QC.

→ Quality_Control helps us with Sampling, Inspection, Testing, and taking Corrective and Preventative actions as required to fulfill customer-specific requirements and expectations.

→ The primary focus of QC is to identify defects or errors.

→ It is product-centric.

→ Examples of some of the QA activities are testing, inspection, and rework.

Key Activities Quality Control

→ Different QC activities are mentioned below to fulfill the customer's requirements.

  • Sampling Inspection
  • In-process Inspection
  • Lab Testing
  • Validation of Product or Service
  • Different Analysis and Chart Patterns

Key Elements of Quality Control Program

→ Refer to the below given key elements of QC that help to improve customer satisfaction

  • Quality Standards Monitoring
  • Production Process Monitoring
  • Identification of Defects
  • Root Cause Analysis and Corrective Actions
  • Handling of Non-conformance Products
  • Documentation and Record Keeping
  • Continuous Improvement

→ Successfully implementing the above-mentioned quality elements helps us to improve customer satisfaction.

Quality Control Tools

→ Different types of QC tools are available to detect defects or trends.

→ There are 7 QC Tools that are very famous for quality control activities.

The Seven Quality Control Tools are:

  • Flow Chart or Process Flow Diagram
  • Cause and Effect Diagram
  • Pareto Chart
  • Histogram
  • Control Chart
  • Scatter Diagram
  • Checksheet

Quality Assurance vs Quality Control

→ Generally people think that the QA & QC are similar but that's not completely true.

→ There are many differences between each other.

→ Also, both are related to each other and both are a part of Quality Management.

→ QA focuses on preventing defects or errors while QC focuses on identifying or detecting defects.

→ QA is proactive in nature while QC is reactive in nature.

→ Quality_Assurance is process-centric while Quality_Control is product-centric.

→ Refer to the below comparison table so you can easily get knowledge about QA and QC.

Quality Assurance vs Quality Control Difference

Examples of QA and QC in Different Industries

→ Now we will learn about the various responsibilities of QA and QC in different industries like 1. Manufacturing Industry, Healthcare Industries, IT Industries, Food Industries, etc.

1. Manufacturing Industry

→ In this industry, QA processes can be used to check whether all compliances are fulfilled as per the requirements and product is being manufactured as per the specification or not?

→ While QC processes focus on that the defect-free product goes to the customer.

2. Healthcare Industry

→ In this industry, QA ensures that the patient can get safe and effective care.

→ While QC processes focus on identifying and correcting disease.

3. IT Industry

→ In the IT Industry, QA can be used to ensure that the developed product meets the customer's requirements.

→ While QC can be used to check that the defect-free software can be shared with the customer.

4. Food Industry

→ In the food industry, QA is used to prevent defects by implementing robust processes and compliance.

→ QA ensures consistent performance with the help of various types of audits.

→ While the QC team checks the final food product that meets quality standards, customer, statutory, and regulatory requirements.

Benefits of QA and QC Program

→ Increased customer satisfaction and minimize the customer complaint

→ Reduced costs and save money by preventing the defects

→ Improved efficiency by fixing problems during the product development stage

→ Enhanced the reputation of an organization by supplying good quality products or service

→ Increase the motivation of the team

→ Good Quality Management System will give the competitive advantage

→ It eliminates the different Lean Wastes from the complete supply chain

Advantages of Quality Assurance and Control Program

→ Process control improvement

→ Product and service quality improvement

→ Cost reduction and profitability improvement

→ Well-defined processes lead to a good working environment for the people

→ Due to good product and service quality the sales and profit will increase

→ It will increase the efficiency and effectiveness

→ It will reduce the rejection of products and service

Disadvantages of the QA and QC Program

→ It is a very time-consuming process

→ Both have high implementation costs

→ A lot of effort and resources are required to train the people

→ To fulfill the compliance requirements increase the operational cost


  1. It's really good example for difference between to QA Vs QC. Thank u.

    1. Thank you for your valuable feedback

    2. It's really help me lot..

      Sir plzz also make ppt ppt on 7 QC tool

    3. Ok thank-you for your valuable feedback.
      Next post i will make presentation on 7 QC tools

  2. Good for knowledge purpose ....keep continue Nikunj

  3. Very nice and helpful definition....

  4. It is helpful knowledge for all quality people.

    Keep continue nikunj

  5. Post a new notes on PPAP,lean,six sigma,apqp,fmea
    All these have detailed with long narration

    1. Thank you for your valuable feedback we will upload soon

  6. Clearly we can understand thank you so much for valuable information..

  7. Hey Nikunj, great work once again. But I think a further description for QC can certainly boast a lot for people who wants to get into the QC industry tho. Looking forward to your new articles fam

  8. It's awesome and thanks for the sharing

  9. Very very thanks for a good nd suitable difference...

  10. Nice explanation about the differences....i want to know more about cpck

  11. Dear Nikunj,
    What do you think about Product Test in QC or QA.
    Because you can also make prodcut test for realibility or durability test for product. These kindd of product test in QA in my opinion.

  12. Dear sir really l appreciate your work. l eagerly searching such training programs for become expert in quality. please tell me whether are you conducting offline or online
    classes some where? l am in bangalore and my mail is santosh_ab6@yahoo.in

    1. Thank you for your appreciation but as of now we are not conducting any training programs. For any other inquiry you can write us at: contact@nikunjbhoraniya.com

  13. Number 1 site, in which I get all the information related Quality process and it's really help me to improve myself in quality

  14. QA is the plan in Powerpoint, and QC is the plan in action at the factory.

  15. Excellent sir thank for giving such valuable information in such a simple method

  16. simple and easy to memorize

  17. Thank you so much, ir... It is very helpful and easy to understand its


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