QoS can be measured using various metrics and methods:
1. Net Promoter Score (NPS): Measures customer loyalty and satisfaction based on their likelihood to recommend the service. 2. Customer Satisfaction Surveys: Collect feedback directly from customers about their experience. 3. Service Level Agreements (SLAs): Define and measure the specific performance criteria expected from a service. 4. Key Performance Indicators (KPIs): Track specific performance metrics like response time, resolution time, and uptime.