EU Sovereignty Score
Non-EU vendorDatabase & Data ManagementHeadquarters: US

Azure Cosmos DB: sovereignty score and 8 European alternatives

Azure Cosmos DB is a fully managed NoSQL and vector database from Microsoft, available only as a cloud service within Azure. Its native model is a JSON document database with SQL-like querying and a flexible schema; the service also supports key-value, graph and table data, among others. Features include vector and hybrid search, automatic partitioning, multi-region distribution with automatic failover, a change feed and mirroring into Microsoft Fabric. You use capacity serverless or with provisioned throughput, and SDKs exist for .NET, Java, Node.js, Python and Go, among others.

Microsoft is a US company, and Cosmos DB is proprietary software with no self-hosting option. Data can be stored in European Azure regions, including France, Germany, Norway and Sweden, but as a US provider Microsoft is subject to US legislation such as the CLOUD Act, including for data in EU regions. Encryption at rest is possible with customer-managed keys. Where sovereignty requirements are strict, also consider how tightly your application becomes bound to Cosmos DB's own APIs.

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Sovereignty score
27 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-350
    Hosting inside and outside Europe (EU, OTHER)
  • Cryptographic key sovereignty SOV-320
    Key management with a non-European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-615
    Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 5, 2026
Headquarters
US (US)Verified by hand
EU adequacy decision
Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model
Vendor-hosted (non-EU)Verified by hand
Data hosting
EU, OTHERVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Category
Database & Data Management
Type
Product
Website
azure.microsoft.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Azure Cosmos DB

The European alternatives to Azure Cosmos DB come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

13 European Database & Data Management vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Azure Cosmos DB

Azure Cosmos DB is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

Azure Cosmos DB hosts data in EU, OTHER. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

Azure Cosmos DB is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Azure Cosmos DB together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Azure Cosmos DB?

It depends on your use case. Strong EU alternatives to Azure Cosmos DB include Aiven, ArangoDB and DuckDB. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Azure Cosmos DB?

Yes. Open-source EU alternatives to Azure Cosmos DB include DuckDB, Elastic, Firebird SQL, MariaDB and Meilisearch. These keep your data fully under your own control and let you self-host if you want to.

Is Azure Cosmos DB GDPR-compliant and where is the data hosted?

Azure Cosmos DB is headquartered in US and hosts data in EU, OTHER. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 5, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Database & Data Management

Database & Data Management: Database systems, data warehousing, managed database services and data platforms. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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8 European alternatives to Azure Cosmos DB — GDPR-compliant & EU-hosted · EU Sovereignty Score