Non-EU vendorEnterprise SearchHeadquarters: US

Lucidworks Fusion: sovereignty score and 8 European alternatives

Fusion is a Lucidworks platform for building search and product-discovery applications, built on Apache Solr and Apache Spark and introduced in 2014. Lucidworks aims its search products at commerce, customer service and workplace search. You can self-host Fusion on Kubernetes with a cloud provider of your choice, or use it as a managed service from Lucidworks, now called Lucidworks Search. In that variant Lucidworks looks after the infrastructure and updates. The documentation suggests that this service runs on Google Cloud and uses a primary and a secondary cluster in two regions.

Lucidworks is a privately held company headquartered in San Francisco and falls under US jurisdiction. Apache Solr, the core of Fusion, is open source; Fusion itself is commercial software. The public documentation names no European region for the managed service. Self-hosting lets a European organisation choose the location and the cloud platform itself.

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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 (US, EU, self-host)
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 4, 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	US, EU, self-hostVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	Enterprise Search
Type	Product
Website	lucidworks.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Lucidworks Fusion

The European alternatives to Lucidworks Fusion come from our knowledge base of over 8,000 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

22 European Enterprise Search 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 Lucidworks Fusion

Lucidworks Fusion 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.

Lucidworks Fusion hosts data in US, EU, self-host. 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.

Lucidworks Fusion 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 Lucidworks Fusion 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 Lucidworks Fusion?

It depends on your use case. Strong EU alternatives to Lucidworks Fusion include AddSearch, Cludo and Datafari. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Lucidworks Fusion?

Yes. Open-source EU alternatives to Lucidworks Fusion include Datafari, Elasticsearch and ElasticSuite. These keep your data fully under your own control and let you self-host if you want to.

Is Lucidworks Fusion GDPR-compliant and where is the data hosted?

Lucidworks Fusion is headquartered in US and hosts data in US, EU, self-host. 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 4, 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 Enterprise Search

Enterprise Search: Internal knowledge and document search across company tools, wikis and file stores. 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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