Is there any difference between quality assurance and quality control? If yes please share your idea.

The terms “quality assurance” and “quality control” are often used interchangeably to refer to ways of ensuring the quality of a service or product. The terms, however, have different meanings.

• Assurance: The act of giving confidence, the state of being certain or the act of making certain.Quality Assurance: The planned and systematic activities implemented in a quality system so that quality requirements for a product or service will be fulfilled.
• Control: An evaluation to indicate needed corrective responses; the act of guiding a process in which variability is attributable to a constant system of chance causes.Quality Control: The observation techniques and activities used to fulfill requirements for quality.

In very simple sense, Quality Assurance is process oriented and focuses on defect prevention, while quality control is product oriented and focuses on defect identification.The most distinctive feature is that QA is a process oriented managerial tool and QC is product oriented corrective tool. 

Quality Assurance QA versus quality control QC

1-Definitions

QA is a set of activities for ensuring quality in the processes by which products are developed while QC is a set of activities for ensuring quality in products. The activities focus on identifying defects in the actual products produced

2-Focus on

QA aims to prevent defects with a focus on the process used to make the product. It is a proactive quality process while QC aims to identify (and correct) defects in the finished product. Quality control, therefore, is a reactive process.

3-Goal

The goal of QA is to improve development and test processes so that defects do not arise when the product is being developed while The goal of QC is to identify defects after a product is developed and before it's released.

4-Methodology (what and how)

QA Establish a good quality management system and the assessment of its adequacy. Periodic conformance audits of the operations of the system. While QC Finding & eliminating sources of quality problems through tools & equipment so that customer's requirements are continually met. QA Prevention of quality problems through planned and systematic activities including documentation while QC The activities or techniques used to achieve and maintain the product quality, process and service.

5-Responsibility

QA Everyone on the team involved in developing the product is responsible for quality assurance. While QC Quality control is usually the responsibility of a specific team that tests the product for defects.

6-Techniques used

QA uses Statistical Tools & Techniques can be applied in both QA & QC. When they are applied to processes (process inputs & operational parameters), they are called Statistical Process Control (SPC); & it becomes the part of QA. While QC used when statistical tools & techniques are applied to finished products (process outputs), they are called as Statistical Quality Control (SQC) & comes under QC.

The difference is that QA is process oriented and QC is product oriented. Testing, therefore is product oriented and thus is in the QC domain. Testing for quality isn't assuring quality, it's controlling it. Quality Assurance makes sure you are doing the right things, the right way.

Quality Assurance is known as QA and focuses on preventing defect. Quality Assurance ensures that the approaches, techniques, methods and processes are designed for the projects are implemented correctly. Quality assurance activities monitor and verify that the processes used to manage and create the deliverables have been followed and are operative.Quality Assurance is a proactive process and is Prevention in nature. It recognizes flaws in the process. Quality Assurance has to complete before Quality Control.

Quality Control is known as QC and focuses on identifying defect. QC ensures that the approaches, techniques, methods and processes are designed in the project are following correctly. QC activities monitor and verify that the project deliverables meet the defined quality standards.Quality Control is a reactive process and is detection in nature.. It recognizes the defects. Quality Control has to complete after Quality Assurance.

·         Quality assurance is the creation of the system ( organizational Process, policies, procedure and standard ) as planned to produce project deliverable.

Quality Control means finding and correcting the defects. Link is that we use the measurement  from quality control to assess whether the process is being followed or not and still effective and appropriate for the project. This is performed through quality audit.

Conducing of exam is QC while exam itself is QA

# Quality  Guarantee : are all activities planned and systematically carried out in the framework of the quality system that can demonstrate that it will provide confidence that a product or service will meet the quality requirements, quality assurance refers to the processes and procedures to systematically monitor various aspects of the process, service or facility to detect and correct and make sure guarantee it is the fulfillment of quality standards. Often

Used interchangeably with quality control, quality assurance, but is a broader concept that includes all policies and activities of the methodology implemented within the quality system, and typically include:

- Determine the technical requirements of adequate

 Input and output.

- The adoption and classification of suppliers.

- Testing of the items purchased in terms of

Conformity to standards of quality and performance

The safety and reliability.

- Receipt and storage.

- Issuing materials properly.

- Audit quality process

- Assess the operations and take necessary

Of corrective actions.

- Check to make sure the final product

Its compliance with the requirements of:

* Technical.

* Reliability.

* Maintenance.

* Performance piece.

# Quality Assurance:

And intended to all planning procedures and regulatory required to give sufficient confidence that the product will meet consumer demands, also includes quality assurance to verify that the actual quality is the required quality, and this includes continuous assessment of the quality and effectiveness, the concept of quality assurance wider and wider range of quality who cares specifications tuning The production, examination and follow-up

 Product performance.

# Quality control :

Quality control or quality control or quality control aspect of a quality process that consists of activities used to detect and measure the variation in the characteristics of the products or produce or process system outputs are including corrective actions to ensure.

The intervention to adjust the quality of the product points

At full production stages include:

- Specifications: This select important properties of product quality and responsive to the desires of the consumer, while the rest is a secondary priority.

- Design: The design of this product according to the specifications, all the extras (improvements) may be a waste of time and money.

- The stage of industrialization: Sign manufactures the product according to designs and specifications.

- Inspection for quality: To ensure product conformity with the specifications and correct problems.

- Specification Review: This is intended to keep pace with consumer desires.

# Basics of quality control:

- Monitoring product components or elements that go into the product of materials and mobilization.

- Changes to international standards for product control.

- Control of the validity of the specific product from the date of production licenses and temperature saved and expiration date.

- Monitor the application dedicated to quality control in the State of product laws.

QA is a set of activities for ensuring quality in the processes by which products are developed. It is a proactive quality process. The goal of QA is to improve development and test process so that defects do not arise when the product is being developed.

QC is a set of activities for ensuring quality in products. The activities focuses on identifying defects in the actual products produced. It is a reactive process. The goal of QC is to identify defects after a product is developed and before it is released.

Brief Differences..

Quality Assurance: Assuring the quality of material and delivery (Material standard, Product safe delivery & Time management)

Quality Control: Assuring the quality of work (Installation, start-up, Commissioning and handover)

QA focus on project procedures and documentations, QC has more to do on implementation of various project procedures.

Thanks for the invitation. I agree with Mr. Vinod's answer. 

agree with mr. vinod                  .