A European deal rarely involves one European country. A French seller with a German subsidiary, Polish payroll and a US private equity buyer is an ordinary mid-market transaction, and it brings at least three legal systems and two time zones into the data room. The room has to satisfy the strictest counsel at the table, which is usually the one advising on employee data.
Our Europe top 10 is built for that situation. This article explains what the list weighs, where it deliberately stops, and the questions to put to each finalist before a European room opens.
How does the Europe list differ from the overall list?
The Europe list does not invent new criteria. It keeps the overall model’s weights: Diligence toolkit 26%, Data protection 21%, Ease of adoption 17%, Cost predictability 15%, Checklist breadth 12% and Deal support 9%. What changes is a set of bonuses for facts that matter more when a deal is European.
| Bonus | Points | What it signals | Providers in our facts that earn it |
|---|---|---|---|
| GDPR listed | +3 | The vendor states GDPR commitments in the material our facts draw on | iDeals, Datasite, Drooms, Box, DocSend |
| Head office in Europe | +3 | Company management, contracts and often support anchored in Europe | iDeals (United Kingdom), Drooms (Germany) |
| European focus in positioning | +2 | The vendor sells to European deal teams as a core market | Drooms |
A word on the first row. GDPR is a regulation, not a certificate, and there is no official GDPR certification that data room vendors commonly hold. Our facts record GDPR when the vendor lists it among its compliance commitments. Every vendor that processes EU personal data for EU customers has GDPR obligations whether it lists them or not, so a missing listing is a prompt to ask, not evidence of non-compliance.
Who leads the Europe list, and why?
The bonuses move several places. The figure below shows which bonus each room in the current top 10 earns, alongside ISO 27001, which European procurement teams often request.
Europe list top 10: bonuses earned and ISO 27001
| GDPR listed | HQ in Europe | Europe focus | ISO 27001 | List score | |
|---|---|---|---|---|---|
| Ellty | – | – | – | – | 97 |
| iDeals | ✓ | ✓ | – | ✓ | 96 |
| Datasite | ✓ | – | – | ✓ | 92 |
| Drooms | ✓ | ✓ | ✓ | ✓ | 91 |
| Ansarada | – | – | – | ✓ | 86 |
| Intralinks | – | – | – | ✓ | 85 |
| Box | ✓ | – | – | ✓ | 84 |
| Firmex | – | – | – | ✓ | 84 |
| SmartRoom | – | – | – | ✓ | 81 |
| Citrix ShareFile | – | – | – | ✓ | 80 |
Two results are worth reading closely. Ellty ranks first without any Europe bonus. That is the strength of its base marks rather than a European credential, and a buyer whose counsel requires a European head office or an ISO 27001 certificate should weigh that directly. Datasite reaches 92 with the GDPR bonus and ranks third. Drooms, a German provider with a long record in European real estate transactions, is the clearest regional specialist on the list.
Related top list Top 10 data rooms for deals in Europe Overall score plus credit for a GDPR listing and a European head office. Hosting location is always an ask. 1
Ellty2
iDeals3
Datasite See the full list →
What should European counsel ask about hosting?
Hosting location is the question European counsel ask first, and the one that vendor head offices answer least. Our facts file does not record hosting regions, because options change and are often set per contract. Do not assume that a European vendor hosts only in Europe, or that a US vendor cannot.
Ask each finalist:
- Which hosting regions can a new room be placed in, and can it be pinned to one region for its whole life?
- Do backups and disaster recovery copies stay in the same region?
- From which countries can vendor support staff access customer content, and under what approval?
- If AI features are used, where is document text processed and by which model provider?
That last question is newer and easy to miss. A room hosted in Frankfurt can still send text to a model endpoint elsewhere when an AI summary runs. The answer may be fine, but it should be known before the feature is switched on for a room holding employee files.
What GDPR paperwork does a European data room need?
For most deals the data room vendor acts as a processor for the seller, which is the controller of the personal data uploaded. That relationship needs a written contract under Article 28 of the GDPR. In practice, counsel will look for four documents.
| Document | What to check | Why it matters on a deal |
|---|---|---|
| Data processing agreement | Processing purposes, security measures, deletion at the end of the room | The legal basis for the vendor to hold the data at all |
| Subprocessor list | Hosting provider, support providers, any AI model provider | Shows every party that may touch personal data |
| Transfer mechanism | EU standard contractual clauses, the EU-US Data Privacy Framework, or processing kept inside the EEA | Required when any processing happens outside the EEA |
| Deletion and archive terms | What is returned at close, what is deleted and when | Sets how long personal data outlives the deal |
On transfers to the United States, the EU-US Data Privacy Framework survived its first court challenge when the EU General Court dismissed the Latombe case in September 2025. The framework remains open to further challenge, so many counsel still prefer standard contractual clauses or EEA-only processing for deal data. The European Data Protection Board publishes the guidance most advisers work from.
How much do language and local support matter?
Less than vendors suggest for the deal team, more than expected for the seller’s staff. Bankers and lawyers on a European auction mostly work in English. The people uploading documents, answering technical Q&A and checking HR folders are often finance and operations staff working in their own language.
Ask which interface languages are available, whether help material exists in those languages, and which hours support is staffed in central European time. Our overall model gives Deal support 9% of the score; on a European process with bidders in three time zones, it is worth checking the actual hours rather than the rating.
Works councils and employee consultation rules in several European countries can also affect timing. They change when HR data goes into the room and who may see it, not which room you choose, but the room should let you hold an HR folder closed until consultation allows it.
How should you shortlist for a European deal?
Shortlisting a data room for a European transaction
- 1Name the strictest jurisdiction
Identify which country's counsel will set the data rules, usually the one with the most employee or customer data in the room.
- 2Filter on hard requirements
If counsel requires EEA-only hosting, ISO 27001 or a European head office, remove every provider that cannot confirm it in writing.
- 3Rank the survivors
Use the Europe list order for what remains, and treat scores within two or three points as a tie.
- 4Collect the GDPR pack
Request the data processing agreement, subprocessor list, transfer mechanism and deletion terms from each finalist.
- 5Check support hours and languages
Confirm staffed hours in your main time zone and the interface languages your seller team needs.
For profiles of the two European-headquartered providers, see iDeals and Drooms. If you are unsure which list fits your deal, the finder asks five questions and points you to a shortlist.
Frequently asked questions
What is the best data room for European deals?
On our current Europe list, Ellty ranks first, followed by iDeals, Datasite and Drooms. The right choice depends on whether your counsel requires EEA-only hosting, ISO 27001 or a European head office.
Is there a GDPR certification for data rooms?
There is no GDPR certificate that data room vendors commonly hold. Our facts record GDPR when a vendor lists it among its commitments. Ask every vendor for its data processing agreement and subprocessor list instead.
Does a European head office mean files are hosted in Europe?
No. Head office is a fact about the company. Hosting regions are set by the vendor's infrastructure and often by contract, so ask which regions are available and whether your room can be pinned to one.
Can a European deal use a US-hosted data room?
It can, with a valid transfer mechanism such as standard contractual clauses or the EU-US Data Privacy Framework, and with counsel's agreement. Many European sellers still prefer EEA hosting for employee and customer data.
Why does Drooms rank higher on the Europe list than overall?
It earns all three Europe bonuses in our facts: GDPR listed, a German head office and a European focus in its positioning. That adds 8 points and moves it from seventh overall to fourth.