Estimated Time: 8 hours | Difficulty: Advanced

27.1 System Design - 27.1.1 Requirements Gathering - 27.1.2 Architecture Planning - 27.1.3 Technology Selection - 27.2 Data Pipeline Construction - 27.2.1 Data Collection Layer - 27.2.2 Processing and Storage - 27.2.3 Access and API Design - 27.3 Analysis Layer - 27.3.1 Metric Calculations - 27.3.2