June 12, 2026 · by Ahesanali Vijapura 7 min read
QA (Quality Assurance) and QC (Quality Control) are both essential parts of software quality management, but serve different purposes. QA is a preventive, process-oriented practice that focuses on building the right development standards before and during production, while QC is a corrective, product-oriented practice that identifies and fixes defects after development. Together, they form a complete quality framework.
The terms quality assurance (QA) and quality control (QC) are often used interchangeably. Although both are part of quality management, they are far from the same. While QA testing focuses on assuring that the quality requested will be achieved, QC testing focuses on fulfilling the quality requested. QA focuses on preventing defects, while QC focuses on identifying the defects. Read on as we dive deep into the differences.
Quality Assurance (QA), Quality Control (QC), and Testing: An Introduction
| QA | QC |
|---|---|
| A set of activities that focus on assuring that the quality requested will be achieved. | A set of activities that focus on fulfilling the quality requested. |
What is Quality Assurance?
Quality Assurance (QA) is all about ensuring your software meets high standards and performs flawlessly. It focuses on improving reliability and ensuring the software is up to the mark. By proactively identifying and resolving issues, QA strives to prevent problems from occurring, resulting in superior software overall.
| # | Category | QA | QC |
|---|---|---|---|
| 1 | Aim | Aims to prevent defects | Aims to identify and fix defects |
| 2 | Technique | Is a preventive technique | Is a corrective technique |
| 3 | Goal | Defines standards and procedures that need to be adhered to meet customer requirements | Ensures that standards are followed while working on the product |
| 4 | Focus | Helps build processes | Helps implement the existing processes |
| 5 | Timing | Activities are determined before production work begins and performed while the product is being developed | Activities are performed after the product is developed |
| 6 | Function | Is a managerial tool | Is a corrective tool |
| 7 | Responsibility | It is the duty of the complete project team | It is only the duty of the testing team |
| 8 | Approach | Comes under the category of verification | Comes under the category of validation |
| 9 | Orientation | Is a process-oriented exercise | Is a product-oriented exercise |
| 10 | Defect Handling | Prevents the occurrence of issues, bugs, or defects in the application | Detects, corrects, and reports bugs or defects in the application |
| 11 | Execution | Does not involve executing the program or code | Involves executing the program or code |
| 12 | Order | Done before Quality Control | Done only after Quality Assurance |
| 13 | Method | Human-based checking of documents or files | Computer-based execution of a program or code |
| 14 | Effort | Is generally not a time-consuming activity | Is generally a time-consuming activity |
| 15 | Scope | Makes sure the quality team is doing the right things in the right way | Makes sure that whatever the quality team has done is as per the requirement |
| 16 | Planning | Processes are planned to prevent defects | Processes are planned to discover defects and fix them |
What is Quality Control?
Quality Control (QC) is all about ensuring your software functions as it should. It involves thoroughly examining the software for any issues or glitches after it has been developed. The main aim is to verify that the software meets all its requirements and operates smoothly as intended.
What is QA Testing?
QA testing is a function of software quality that assures the procedures and standards are appropriate for a project and are correctly executed. The QA team’s job is to improve the test processes so that defects do not arise when the product is being developed.
What is QC Testing?
QC testing is a function of software quality that checks that the project follows standards, processes, and procedures laid down, and that the project produces the required internal and external deliverables. The QC team’s job is to identify defects after a product is developed but before it is released. QC aims to identify (and correct) defects in the finished product.
QA vs. QC: Comparison Overview
How QA and QC Work in Modern DevOps
In modern DevOps environments, QA and QC have evolved significantly beyond their traditional definitions. Continuous integration and continuous delivery (CI/CD) pipelines have made both practices faster, more automated, and more tightly integrated into the software development lifecycle.
QA in DevOps is embedded from the very start. Rather than being a standalone phase, quality assurance is built into sprint planning, code reviews, and pipeline configuration. Teams use infrastructure-as-code, automated testing frameworks, and shift-left practices to catch process gaps early, often before a single line of application code is written. This means QA is no longer just a human-based, document-level exercise; it includes setting up automated gates that enforce quality standards at every stage of the pipeline.
QC in DevOps benefits directly from automation. Regression tests, smoke tests, and integration tests run automatically with every code commit, meaning defect detection happens continuously rather than at a single post-development checkpoint. Tools like static code analyzers, test coverage reporters, and performance monitors serve as QC instruments that validate each build against defined quality benchmarks.
The key shift in DevOps is speed without sacrificing rigor. QA ensures the pipeline itself is trustworthy, and the processes within it are sound. QC ensures every deployment candidate meets the required standard before it reaches production. Together, they give DevOps teams the confidence to release frequently while keeping quality high.
Why QA and QC Matter for Enterprise Software
For enterprise organizations, the stakes around software quality are far higher than they are for smaller applications. A single defect in a mission-critical system can disrupt operations, erode customer trust, trigger compliance violations, or result in significant financial loss. This is why both QA and QC are non-negotiable at the enterprise level.
Risk reduction at scale. Enterprise software often serves thousands or millions of users simultaneously. QA reduces the risk of systemic failures by ensuring that development processes are sound and repeatable. QC provides the final checkpoint that catches defects before they reach a live environment, where remediation costs multiply rapidly.
Regulatory and compliance requirements. Industries such as financial services, healthcare, and government are subject to strict regulatory standards. QA ensures that development workflows are designed to meet those standards by default. QC validates that each release actually complies, providing auditable evidence that the software behaves as required.
Lower total cost of ownership. Fixing a defect in production is significantly more expensive than catching it during development. By investing in QA upfront and maintaining rigorous QC checkpoints, enterprises reduce rework, minimize downtime, and lower their overall cost of software ownership over time.
Business continuity. Enterprise systems are often interconnected, meaning a failure in one area can cascade across the business. Robust QA and QC practices help ensure that changes are tested holistically, reducing the likelihood of unexpected failures that disrupt business operations.
Real-World Impact: A Financial Institution Case Study
Here’s a case of a major credit union that has over 372,000 members and assets worth $4.7 billion. Despite having selected a primary IT vendor for their operations, they recognized that dedicated QA services were mission-critical to their success. This led them to maintain a separate partnership with Synoptek specifically for QA services, demonstrating how essential specialized quality assurance is in the financial sector.
The credit union’s decision on partnering for QA services highlights a crucial point: while general IT services are essential, dedicated QA expertise is often irreplaceable, especially in industries where system failures could impact hundreds of thousands of customers. The QA team conducts regular system audits and performance monitoring to ensure all financial services meet the highest quality standards.
How Do QA, QC, and Testing Work Together?
QA, QC, and testing form a cohesive bond to deliver a top-notch product. QA establishes the standards, QC ensures compliance, and testing verifies that all quality standards are met. This collaborative approach swiftly identifies and resolves issues and ensures a high-quality outcome before it reaches the end-user.
Quality for Success
One of the main reasons many developers skip software testing is that it increases development time; however, that is not entirely true. Although software testing might seem challenging initially, it only aids in ensuring the quality and reliability of your product.
Two certain ways of ensuring top-notch quality are to carry out QA and QC testing: QA testing verifies that the processes used to manage and create deliverables are followed and recognizes faults in the process, and QC testing ensures that the approaches, techniques, methods, and processes are followed so that project deliverables meet the defined quality standards.
Therefore, software quality processes and delivering a quality product through QA and QC not only save time and money but also mitigate risk and guarantee a competitive edge over rivals—a recipe for success!
Ensure your applications deliver excellence without struggle. Connect with our experts to explore application management services that offer comprehensive QA, QC, and software testing tailored to meet your business needs.