Key aspects of quality assurance include:

Standards and specifications: Quality assurance begins by establishing clear and measurable standards, specifications, or criteria that define acceptable levels of quality for products, services, or processes. These standards serve as benchmarks against which performance is assessed and evaluated.
Planning and implementation: Quality assurance involves developing comprehensive plans, procedures, or protocols for monitoring, evaluating, and improving quality throughout the entire lifecycle of a product, service, or process. This includes defining roles and responsibilities, allocating resources, and establishing quality control measures.
Quality control: Quality assurance encompasses quality control activities that focus on detecting and correcting defects, errors, or deviations from established standards. This may involve conducting inspections, tests, audits, or reviews at various stages of production, delivery, or implementation to ensure compliance with quality requirements.
Continuous improvement: Quality assurance emphasizes a culture of continuous improvement, where feedback, lessons learned, and best practices are used to drive ongoing enhancements to products, services, or processes. This may involve analyzing data, identifying root causes of quality issues, implementing corrective actions, and monitoring performance over time.
Customer focus: Quality assurance places a strong emphasis on meeting or exceeding customer expectations and requirements. This involves understanding customer needs, preferences, and feedback, and incorporating them into quality assurance processes to deliver products, services, or experiences that consistently satisfy customer needs and deliver value.
Compliance and regulation: Quality assurance ensures compliance with relevant laws, regulations, standards, and industry best practices. This may involve adhering to quality management systems, industry certifications, and regulatory requirements specific to the product, service, or industry sector.
Documentation and reporting: Quality assurance involves maintaining accurate records, documentation, and reporting systems to track quality-related activities, findings, and outcomes. This documentation serves as evidence of compliance with quality standards, facilitates communication, and supports decision-making processes.