How would you implement log aggregation and analysis?

Log aggregation: 1) CloudWatch Logs for centralized logging, 2) Log Groups and Log Streams organization, 3) CloudWatch Insights for log analysis, 4) Elasticsearch Service for advanced search, 5) Kinesis for real-time log streaming, 6) Lambda for log processing, 7) S3 for long-term log storage, 8) Automated alerting on log patterns.