Datadog

Datadog costs $18 per host per month on the entry plan when billed monthly, or $15 per host per month when billed annually (a 17% saving). A free plan is available. A 14-day free trial is offered. As of June 28, 2026 — source: datadoghq.com.

Cloud monitoring and observability platform unifying infrastructure metrics, application performance monitoring (APM), logs, and security. Pricing scales with the number of hosts, ingested logs, APM traces, and metrics — costs can escalate quickly at scale. Free plan supports up to 5 hosts; Infrastructure Pro at $15/host/month annual; Enterprise at $23/host adds advanced features.