EU Sovereignty Score
Self-hosted / open sourceData Platform & WarehouseHeadquarters: US

Apache Druid: sovereignty score and 8 European alternatives

Apache Druid is an open-source, real-time analytics database. According to the project, it returns query results in under a second on both streaming and batch data, including high-cardinality data and many concurrent queries. It ingests streams natively from Apache Kafka and Amazon Kinesis, supports SQL for ingestion, transformation and querying, and stores data in a columnar, time-indexed, compressed form. Its ingestion, query and orchestration components are loosely coupled and use a deep storage layer, so clusters scale out; backup, recovery and replication are included. Druid is software you download, install and operate yourself.

Druid is a project of the Apache Software Foundation, a US non-profit (501(c)(3)), and is released under the Apache License 2.0. Because there is no vendor-operated Druid service behind the software, data stays where you deploy it: on your own servers, at an EU hosting provider or in a cloud region you choose. A European organisation therefore controls location and access itself, and also takes on the operation and maintenance of the cluster.

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Sovereignty score
71 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-3100
    Hosting inside and outside Europe (EU, OTHER)
  • Cryptographic key sovereignty SOV-390
    Self-hostable: encryption keys under your own control
  • Freedom from lock-in SOV-680
    Open source: low switching costs
  • Source & runtime sovereignty SOV-4 · SOV-675
    Source code auditable, forkable and self-hostable

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
HeadquartersUS (US)Verified by hand
EU adequacy decisionOnly for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty modelOpen-source, distributedVerified by hand
Data hostingEU, OTHERVerified by hand
Open-sourceYesVerified by hand
GDPR-compliantYesVendor-stated
CategoryData Platform & Warehouse
TypeProduct
Websitedruid.apache.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Apache Druid

The European alternatives to Apache Druid 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

12 European Data Platform & Warehouse 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 Apache Druid

Apache Druid 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.

Apache Druid 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.

Apache Druid is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Apache Druid 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 Apache Druid?

It depends on your use case. Strong EU alternatives to Apache Druid include DuckDB, Exasol and Falkor. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Apache Druid?

Yes. Open-source EU alternatives to Apache Druid include DuckDB, Garage and MonetDB. These keep your data fully under your own control and let you self-host if you want to.

Is Apache Druid GDPR-compliant and where is the data hosted?

Apache Druid 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 Data Platform & Warehouse

Data Platform & Warehouse: Lakehouses, cloud data warehouses, data-lake storage and analytical databases for enterprise-wide analysis. 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 Apache Druid — GDPR-compliant & EU-hosted · EU Sovereignty Score