Free AWS Certified Developer Associate DVA-C02 Practice Question

Amazon CloudWatch is the correct answer because it is explicitly designed to monitor applications and infrastructure, allowing you to collect metrics, create alarms, and access logs in a unified way. This aids in observing system performance and operational health. Amazon Kinesis focuses on real-time data streaming and analysis, not on the comprehensive monitoring capabilities provided by CloudWatch. AWS CloudTrail is a governance, compliance, and auditing service that records API calls, including actions taken by AWS services, but does not offer the extensive metric and alarm features of CloudWatch. While Amazon S3 can be used for storing log data, it is mainly a storage service and lacks the active monitoring and alerting facilities that CloudWatch offers.