What it is: AWS monitoring service for logs, metrics, alarms, and dashboards.

What it’s for:

• Collect and view Logs.
• Track Metrics (CPU, latency, error rate).
• Trigger Alarms and automate responses.

Key ideas:

• CloudWatch is often the first place to look for operational troubleshooting.
• Can publish custom metrics from applications.

Exam cues:

• “monitor CPU and trigger scaling” → CloudWatch metrics + alarms + ASG.
• “centralize logs” → CloudWatch Logs.

Hard words (English + IPA + Vietnamese meaning):

• *monitoring* /ˈmɑːnɪtərɪŋ/: giám sát
• *metric* /ˈmetrɪk/: chỉ số đo
• *alarm* /əˈlɑːrm/: cảnh báo
• *dashboard* /ˈdæʃbɔːrd/: bảng điều khiển