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Datadog is the enterprise observability platform covering infrastructure, application performance, logs, and security in one dashboard. UK DevOps teams monitor servers, containers, and cloud services with intelligent alerting and AI-powered anomaly detection. Pricing is usage-based, typically starting around $15/host/month, and can grow with scale. It integrates with AWS, Azure, GCP, and 600+ technologies. GDPR compliance includes EU data residency and DPAs. Datadog is the industry standard for scale-ups with serious infrastructure; smaller teams may find lighter tools like Sentry plus a metrics host sufficient.