| First-Party Audit |
Internal team or outsourced auditor acting on behalf of the organization itself |
To check internal compliance with standards, policies, and processes |
An audit team will review ISO 9001/14991/45001/22000 etc. compliance and also to identify system weakness for improvement |
- Early detection of issues
- Improved process control
- Cost savings
- Preparedness for external audits
- Continuous improvement
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| Second-Party Audit |
One organization audits another (customer - supplier) or engaging Excelon to conduct audit |
To ensure the supplier meets contract, quality, or compliance requirements |
An audit team will review the compliance status of its supplier/contractors/subcontractors with reference to international standards (e.g. ISO9001/14991/45001/22000 etc.) or the client's company's standards. E.g., A car manufacturer engaging Excelon to audit its parts supplier. Or Flipkart engaging Excelon to audit minute stores related to food safety etc.
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- Supply chain quality control
- Risk reduction
- Stronger business relationships
- Compliance assurance
- Cost and time efficiency
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| Third-Party Audit |
Independent, accredited certification body |
To certify compliance with an international or national standard |
ISO certification audit by an accredited body/certification body like BSI, TÜV, or DNV |
- Independent and unbiased verification
- Certification enhances credibility
- Meets customer/regulatory requirements
- Improves market access
- Builds trust and reputation
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| Compliance Audit |
Internal, external, or regulatory authority |
To verify adherence to laws, regulations, and internal policies |
Labour department checking occupational safety compliance |
- Ensures legal compliance
- Avoids fines and penalties
- Strengthens governance
- Reduces legal risks
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| Process Audit |
Internal or external auditors |
To check if a process is effective and efficient in meeting planned objectives |
Auditing production line to see if SOPs are followed |
- Process optimization
- Identifies bottlenecks
- Improves productivity and quality
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| Product Audit |
Internal, customer, or third party |
To verify product meets quality, safety, or performance requirements |
Random inspection of finished goods before shipping |
- Ensures product quality
- Reduces defects
- Protects brand reputation
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| System Audit |
Internal, customer, or third party |
To evaluate the overall management system's compliance to standards |
ISO 14001 environmental management system audit |
- Ensures system effectiveness
- Supports continual improvement
- Helps retain certification
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| Supplier Audit |
Customer or contracted auditor |
To evaluate supplier’s facilities, processes, and quality systems |
Pharma company auditing raw material supplier |
- Ensures supplier reliability
- Improves supply chain stability
- Avoids costly supply disruptions
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| Remote/Virtual Audit |
Internal, customer, or third-party via online tools |
To conduct audits without physical presence using technology |
Zoom-based ISO audit during pandemic |
- Saves travel costs
- Reduces downtime
- Enables global auditing without borders
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