CloudWatch integration (IAM role) or streaming metrics
Amazon Data Firehose to Dynatrace
Azure
Azure Monitor integration (service principal)
Event Hub to Dynatrace
GCP
Cloud Monitoring integration (service account)
Pub/Sub to Dynatrace
Good practice: Install OneAgent on cloud virtual machines in addition to the integration: the integration provides the provider's metrics, OneAgent the visibility into processes and services.
Extensions 2.0 (Dynatrace Hub) collect data from devices and technologies without OneAgent: switches and routers (SNMP), databases (SQL queries), remote JMX, Prometheus exporters. They run in an ActiveGate group for redundancy.
Enable the extension from the Hub, choose the ActiveGate group, fill in the endpoints and credentials (credential vault).
Metrics arrive with their entities, linked to the topology and to Davis problems.
Good to know: Dynatrace evolves very quickly (new platform, Grail, apps): check screen names and API versions in your environment's documentation.