Evan Mouzakitis provides a detailed guide on collecting and monitoring metrics from Google Compute Engine (GCE) using Google's tools, as part of a three-part series. This installment focuses on the use of Google Cloud Platform's Stackdriver monitoring API to extract GCE performance metrics, requiring OAuth2.0 authentication via service or user account authorization. The post explains how to set up and use the API for querying timeseries data, utilizing parameters such as start and end times, filters, and aggregation options, and addresses potential issues like missing security headers. Additionally, the post highlights the gcloud command-line tool, which, while limited to quota-related metrics, is useful for managing Google Cloud resources. The guide also introduces Google's Stackdriver monitoring service, which facilitates visualization and alerting on GCE metrics through customizable dashboards and built-in alerting systems. For comprehensive monitoring and analysis of GCE and other cloud environments, the post suggests using Datadog, which offers integrations with over 850 technologies, including GCE.