AWS Managed Grafana EU Alternative 2026: CLOUD Act Risks in Observability Data and GDPR-Compliant Options

Post #857 in the sota.io EU Compliance Series

Most SaaS developers focus their GDPR compliance efforts on user data — the rows in your database, the PII in your CRM. Observability infrastructure is an afterthought. That is a mistake.

Amazon Managed Grafana (AMG) stores your application metrics, distributed traces, and logs under the jurisdiction of Amazon.com, Inc. — a US company fully subject to the CLOUD Act. Your dashboards may run in an AWS EU region, but the control plane, workspace management, and IAM integration sit under US law. If the US Department of Justice issues a warrant, Amazon cannot refuse.

This matters because observability data is not anonymous. Application metrics contain IP addresses, user session identifiers, tenant IDs, API endpoint patterns, error traces with stack dumps containing customer data, and request payloads that may include PII. Sending this data to an AMG workspace is a cross-border transfer under GDPR Chapter V — and most SaaS developers have neither the DPA nor the SCCs in place to cover it.

This guide explains the CLOUD Act and GDPR exposure in AMG, maps the legal requirements to your metrics infrastructure, and presents concrete EU-native alternatives.

What Amazon Managed Grafana Actually Stores

Before assessing risk, understand the data flows in an AMG deployment:

Data that flows through Amazon Managed Grafana:

• Workspace metadata (user identities, dashboard configurations, alert rules)
• Data source credentials (API keys, Prometheus endpoints, CloudWatch access keys)
• Dashboard query history and user interaction logs
• Alert notification routing (who gets paged, under what conditions)

Data stored in connected sources (but queried through AMG):

• Amazon Managed Service for Prometheus (AMP): raw time-series metrics with labels
• Amazon CloudWatch: application logs with full request/response context
• AWS X-Ray: distributed traces including HTTP headers, database queries, external API calls
• OpenSearch: indexed log events that may contain PII

The AMG workspace itself holds configuration and access credentials. The metrics data sits in AMP, CloudWatch, and X-Ray — also US-parent services. A complete AMG observability stack gives a US government agency access to the full picture of your application's runtime behavior.

The CLOUD Act Problem for Observability Data

The Clarifying Lawful Overseas Use of Data Act (CLOUD Act, 18 U.S.C. § 2713) requires US companies to produce data stored anywhere in the world in response to a valid US government order. AWS operates under this obligation regardless of which AWS region stores your data.

For observability tooling, the practical CLOUD Act exposure includes:

The CLOUD Act also applies to Amazon Managed Service for Prometheus (AMP), which stores the raw time-series data that Grafana visualizes. AMG without AMP is unusual; in most production deployments, both services are in scope.

GDPR Requirements for Metrics and Observability Data

GDPR does not exempt telemetry or infrastructure data from its requirements. The obligations that apply to observability infrastructure include:

Article 4(1): Personal Data Definition

Any data that can identify a natural person — directly or indirectly — is personal data. This includes:

• IP addresses in metrics labels or log fields (CJEU in Breyer v. Germany, C-582/14: dynamic IP addresses are personal data)
• User session IDs used as Prometheus labels or trace attributes
• Tenant identifiers in multi-tenant SaaS if they map to individual users
• Error stack traces that include API parameters containing PII

If your Prometheus metrics use labels like user_id, session_id, tenant_email, or request_path with user-identifying values, those metrics are personal data under GDPR.

Article 28: Data Processor Agreement

When you send personal data to Amazon for processing (including storage and query execution), Amazon is a data processor. Article 28 requires a written Data Processing Agreement (DPA) with specific mandatory clauses.

AWS provides a DPA through their AWS GDPR Data Processing Addendum. However, this DPA only covers processing within the agreed service scope and does not — and cannot — override CLOUD Act obligations. When US authorities compel disclosure, the DPA protections do not apply.

Article 44-46: Third-Country Transfers

If your personal data leaves the EU/EEA, you need a legal transfer mechanism:

• Adequacy decision (EU-US Data Privacy Framework, DPF): covers transfers to US companies certified under DPF. AWS is certified. However, NOYB and others have challenged DPF validity; a second Schrems ruling remains possible.
• Standard Contractual Clauses (SCCs): additional contractual protection that requires a Transfer Impact Assessment (TIA). US CLOUD Act orders are a factor in TIAs.
• Binding Corporate Rules (BCRs): internal cross-group transfer mechanism, not applicable for AWS.

The EU-US DPF certification covers AWS for standard commercial transfers. It does not protect against government access orders, which the DPF explicitly carves out from protection. A TIA for AMG that honestly addresses CLOUD Act risk may not support a positive outcome.

Article 32: Security of Processing

Article 32 requires "appropriate technical and organisational measures" considering the risks. For observability data, measures include:

• Pseudonymization of user-identifying labels before sending to cloud metrics systems
• Encryption at rest with customer-managed keys (AMG supports AWS KMS; US government orders can extend to KMS)
• Access controls limiting who can query raw metrics

KMS does not protect against CLOUD Act orders. If Amazon is served with a production order, they must produce decrypted data or the decryption keys. Customer-managed KMS keys are not a CLOUD Act defense.

EU-Native Alternatives to Amazon Managed Grafana

Option 1: Grafana Cloud (EU Region)

Grafana Labs offers Grafana Cloud with data stored in Frankfurt (eu-central-1 equivalent). Grafana Labs is a US-incorporated company (San Francisco, CA) subject to CLOUD Act.

Assessment: The EU data residency of Grafana Cloud does not eliminate CLOUD Act risk. Grafana Labs, as a US company, can be compelled to produce data regardless of where it is physically stored. Grafana Cloud is not a GDPR-equivalent alternative to AMG for organizations requiring US-parent-free infrastructure.

However, for organizations whose primary concern is data residency (not US jurisdiction), Grafana Cloud EU is operationally simpler than self-hosted alternatives and includes a free tier.

Option 2: Grafana OSS Self-Hosted on EU Infrastructure

The most robust option: run Grafana open source software on infrastructure that has no US-parent company in the chain.

Recommended stack:

Deployment on Hetzner (Kubernetes/Docker example):

# docker-compose excerpt for core observability stack
services:
  grafana:
    image: grafana/grafana:latest
    ports: ["3000:3000"]
    environment:
      - GF_AUTH_ANONYMOUS_ENABLED=false
      - GF_SECURITY_ADMIN_USER=admin
    volumes:
      - grafana-data:/var/lib/grafana

  victoriametrics:
    image: victoriametrics/victoria-metrics:latest
    ports: ["8428:8428"]
    volumes:
      - vm-data:/storage
    command:
      - -storageDataPath=/storage
      - -retentionPeriod=12  # months

  loki:
    image: grafana/loki:latest
    ports: ["3100:3100"]
    volumes:
      - loki-data:/loki

  tempo:
    image: grafana/tempo:latest
    ports: ["3200:3200", "4317:4317", "4318:4318"]
    volumes:
      - tempo-data:/var/tempo

Option 3: VictoriaMetrics (Standalone)

VictoriaMetrics is a high-performance time-series database developed by a team with European roots (originally Ukraine-based, now distributed). It is:

• Drop-in Prometheus-compatible (scrapes, PromQL queries)
• Up to 10x more efficient than Prometheus at scale
• Available as single-binary (simple deployments) or cluster mode (HA)
• Licensed under Apache 2.0

For teams that only need metrics (not logs or traces), VictoriaMetrics + Grafana OSS on Hetzner is the simplest path to eliminating CLOUD Act exposure.

Prometheus → VictoriaMetrics migration:

# Prometheus remote_write to VictoriaMetrics
remote_write:
  - url: "http://victoriametrics:8428/api/v1/write"
    queue_config:
      max_samples_per_send: 10000
      max_shards: 30

Option 4: Thanos for High-Availability Metrics

Thanos extends Prometheus with long-term storage, global query federation, and downsampling. For organizations running Kubernetes in the EU, Thanos + Grafana OSS is the production-grade alternative to AMG + AMP.

GDPR advantage: Thanos stores data in your choice of object storage. Using Hetzner Object Storage or Scaleway Object Storage keeps all data under EU jurisdiction with no US-parent involvement.

# Thanos store gateway pointing to EU-native object storage
type: S3
config:
  bucket: your-metrics-bucket
  endpoint: fsn1.your-objectstorage.com  # Hetzner
  region: eu-central
  access_key: <your-key>
  secret_key: <your-secret>
  insecure: false

What Amazon Managed Grafana Does That OSS Does Not

Before switching, be aware of the genuine AMG advantages you give up with self-hosted alternatives:

For teams already invested in AWS tooling, migration requires replacing CloudWatch Logs with a self-hosted log shipper (Promtail → Loki) and replacing X-Ray with OpenTelemetry → Tempo. The lift is 2-4 days for a mature implementation.

GDPR Compliance Checklist for EU Observability Infrastructure

Before declaring your observability stack GDPR-compliant, verify:

Data Classification:

• Audit all Prometheus metric labels for PII (user_id, session_id, IP addresses, email addresses)
• Pseudonymize or hash user-identifying labels at the collection point (Prometheus relabeling rules)
• Review distributed trace attributes for request body data, query parameters, and headers containing PII
• Classify log retention requirements per GDPR Art.5(1)(e) (storage limitation)

Legal Basis and DPA:

• Identify the legal basis for processing observability data (Art.6(1)(f) legitimate interests is common)
• Update your records of processing activities (ROPA) to include observability infrastructure
• Execute DPA with any third-party observability provider (required under Art.28)
• Confirm no SCCs gap if observability provider has US-parent company

Technical Measures (Art.32):

• Encryption at rest for all metrics/logs/traces storage
• Encryption in transit (TLS 1.2+) for all scrape endpoints and query traffic
• Access control: only authorized personnel can query raw observability data
• Audit logging: who queried what, when (meta-compliance for observability itself)
• Data retention policies enforced at the storage layer (VictoriaMetrics -retentionPeriod, Loki retention_period)

Data Minimization (Art.5(1)(c)):

• Remove unnecessary metric cardinality (avoid high-cardinality labels that identify individuals)
• Configure log sampling for verbose debug logs that may contain PII
• Apply Prometheus relabeling to drop PII-containing labels before storage

Migration Path: AMG to EU Self-Hosted Grafana

A structured migration for a mid-size SaaS team (10-50 developers, production Kubernetes):

Week 1 — Assessment:

1. Audit all AMG data sources. Identify which connect to AMP, CloudWatch, X-Ray, RDS.
2. Export all Grafana dashboard JSON (GET /api/dashboards/home, backup all dashboard UIDs).
3. Assess data volume: current AMP ingestion rate (samples/sec), CloudWatch log volume (GB/day).
4. Choose EU hosting provider: Hetzner Cloud (cost-effective) or Scaleway (French jurisdiction, SOC2).

Week 2 — Infrastructure:

1. Deploy Grafana OSS on your EU cluster (Helm chart or Docker Compose).
2. Deploy VictoriaMetrics (single-node for <1M samples/sec, cluster mode for larger).
3. Configure Prometheus remote_write → VictoriaMetrics (parallel to existing AMG for validation).
4. Deploy Loki for logs, Tempo for traces if required.

Week 3 — Data Sources and Dashboards:

1. Reconfigure all Prometheus scrapers to point to new VictoriaMetrics endpoint.
2. Import dashboard JSON exports into new Grafana instance.
3. Validate metric continuity: compare queries between old AMG and new Grafana for 48h.
4. Migrate alert rules from AMG to Grafana Alertmanager.

Week 4 — Cutover:

1. Update all alerting integrations (PagerDuty, Slack) to new Grafana instance.
2. Redirect all Grafana user bookmarks and on-call runbooks.
3. Disable AMP remote_write from Prometheus (cost savings immediate).
4. Terminate AMG workspace after 30-day parallel validation.

Cost Comparison: AMG vs. EU Self-Hosted

For a team with 10 active Grafana users, 50 dashboards, 5M Prometheus samples/sec:

The cost difference is substantial at scale. EU self-hosted observability is typically 85-90% cheaper than AMG+AMP for production workloads.

Deploy EU Observability on sota.io

sota.io is a European PaaS with no US-parent jurisdiction. Grafana OSS, VictoriaMetrics, Loki, and Tempo can each be deployed as Docker services on sota.io with a standard deploy.toml configuration.

[app]
name = "grafana-eu"
region = "eu-central"

[[services]]
name = "grafana"
image = "grafana/grafana:latest"
port = 3000

[[services.env]]
name = "GF_AUTH_ANONYMOUS_ENABLED"
value = "false"

All data stays in the EU. No US company holds your observability data. GDPR Art.28 DPA is covered by the sota.io Data Processing Agreement. CLOUD Act exposure is zero.

The Observability Blind Spot in GDPR Compliance Programs

Most GDPR compliance programs audit production databases, marketing tools, and analytics platforms. Observability infrastructure — Grafana, Prometheus, log aggregators — is rarely reviewed.

This creates a compliance gap: organizations may have SCCs and DPAs in place for Salesforce, HubSpot, and Stripe, but their application metrics are flowing to Amazon Managed Grafana under conditions that would fail a serious Transfer Impact Assessment.

The EU NIS2 Directive (Article 21) and GDPR Article 32 both require that technical security measures extend to monitoring and logging infrastructure. An incident that exposes customer PII through log data stored in a US-parent cloud service is a reportable breach — and one that your CISO may not have anticipated.

Treating observability data with the same care as production database data is not bureaucratic overhead. It is the correct application of GDPR's technology-neutral scope.

Summary

Amazon Managed Grafana is a CLOUD Act-exposed observability platform. Metrics, logs, and traces that pass through AMG — and the connected services AMP, CloudWatch, X-Ray — are accessible to US government authorities under a valid production order, regardless of AWS region.

EU developers building GDPR-compliant SaaS products should evaluate:

1. Grafana OSS + VictoriaMetrics on Hetzner/Scaleway — the highest-sovereignty option, 85%+ cheaper than AMG
2. Grafana OSS + Thanos + EU-native object storage — for high-availability multi-cluster setups
3. sota.io as deployment target — EU-native PaaS with GDPR DPA, no US-parent involvement

The migration is 2-4 weeks of engineering effort. The compliance benefit is permanent elimination of CLOUD Act risk from your observability stack and a defensible GDPR Art.32 posture that survives a supervisory authority audit.