Leaseweb vs Unomed Cloud PACS

Compare Leaseweb and Unomed Cloud PACS on capabilities, jurisdiction, assurance, and fit for European buyers.

Both listed as alternatives to: Amazon Web Services (AWS), Microsoft Azure

Leaseweb

Netherlands· Cloud Computing

Needs review

Shortlist when you want a Dutch (or other local Leaseweb) B2B contract for dedicated servers, CloudStack public cloud, colo, or regional object storage, and you will pick the DC yourself. Skip when you need EU-only halls with no US affiliate in the group, a hyperscaler-width managed-platform catalog, or self-serve hobby VPS without KYC. Consider Hetzner or OVHcloud for simpler EU-centric IaaS, or AWS if you need the global managed-service surface.

Dutch sales entityDedicated / bare metalCloudStack KVM public cloudS3-compatible object storageColo + global DCsISO 27001 (claimed)

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Unomed Cloud PACS

Switzerland· Cloud Computing

Needs review

Shortlist for Swiss practices that want a cloud DICOM archive, browser viewing and referrer sharing without replacing their PIS, and that accept a Zurich SaaS vendor with claimed Swiss image hosting. Skip when you need a default CE-marked diagnostic viewer, a fully public subprocessor and audit pack, or a self-hosted PACS you operate yourself. Consider PostDICOM or a classic on-prem PACS plus sharing tool when those constraints dominate.

Swiss-operatedCloud PACS / VNADICOM archiveBrowser viewerPIS overlay

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Highlighted rows differ between the two products.

Leaseweb vs Unomed Cloud PACS: Snapshot
Feature	Leaseweb	Unomed Cloud PACS
Country of origin	Netherlands	Switzerland
Category	Cloud Computing	Cloud Computing
Open source	No	No
Self-hosted	No	No
Headquarters	Netherlands	Switzerland
Legal entity	Leaseweb Netherlands B.V. (KvK 30141839, Amsterdam). Website: Leaseweb Global B.V. (KvK 60593652). Other local sales entities exist.	Unomed AG
US parent / control	No known US parent	No known US parent
CLOUD Act exposure (indicative)	Medium	Medium
EU-hosted status	Not listed	Partial
Hosting / residency	Customer-chosen Leaseweb halls (Amsterdam, Frankfurt, London, plus US, CA, SG, HK, AU). Object storage: nl-01, de-01, uk-01, us-01, ca-01, sg-01. Optional Cloud Connect via Megaport to AWS, Google Cloud, Azure. Public Cloud backup row lists Acronis. NL Feb 2026 terms keep that entity on Dutch DCs unless law, written authorisation, or customer action. Sub-processor list on request.	Vendor claims primary hosting, databases and DICOM storage in Switzerland. Privacy policy lists identity/liveness processing in EU (Ireland) and speech recognition in EU (Denmark). API CSP references AWS S3 eu-central-2 (Zurich) and AWS Rekognition/Cognito eu-west-1; push via Firebase; website may use Cloudflare WAF cookies and Google Analytics. Named subprocessor list on request only.
Summary	Dutch B2B IaaS: dedicated servers, CloudStack public cloud, colocation, and S3-compatible object storage on a global hall list under local sales entities.	Swiss cloud PACS and vendor-neutral archive for storing, viewing and sharing DICOM medical images in the browser, integrated with existing medical practice workflows.
Tags	iaas dedicated-servers bare-metal colocation object-storage cloudstack netherlands gdpr b2b	pacs dicom medical-imaging healthcare cloud-pacs switzerland vna

At a glance: Leaseweb vs Unomed Cloud PACS
At a glance	Leaseweb	Unomed Cloud PACS
HQ	Amsterdam, Netherlands	Zurich, Switzerland
Typical NL contract	Leaseweb Netherlands B.V. (KvK 30141839)	Not listed
Website operator	Leaseweb Global B.V. (KvK 60593652)	Not listed
Founded	1997 (vendor 2022 press)	Not listed
Product type	B2B IaaS (dedicated, cloud, colo, object storage); not self-hosted, not open source	Cloud PACS / VNA SaaS
Published dedicated DCs	AMS-01/02, FRA-10, LON-01/11, MTL-02, SIN-01, HKG-10, SYD-10, plus nine US halls	Not listed
Object storage regions	nl-01, de-01, uk-01, us-01, ca-01, sg-01	Not listed
Commercial model	B2B contract, monthly or hourly cloud, KYC on first order	Not listed
Legal entity	Not listed	Unomed AG (CHE-374.858.885)
Self-hosted	Not listed	No (local connector only)
Default viewer	Not listed	OHIF (not for diagnosis per GTCs)
Data residency regions	Not listed	Switzerland claimed for DICOM/hosting; some auxiliary processing in EU (IE/DK) per privacy policy

Key capabilities: Leaseweb vs Unomed Cloud PACS
Key capabilities	Leaseweb	Unomed Cloud PACS
Dutch sales entity	Yes	Not listed
Dedicated / bare metal	Yes	Not listed
CloudStack KVM public cloud	Yes	Not listed
S3-compatible object storage	Yes	Not listed
Colo + global DCs	Yes	Not listed
ISO 27001 (claimed)	Yes	Not listed
Swiss-operated	Not listed	Yes
Cloud PACS / VNA	Not listed	Yes
DICOM archive	Not listed	Yes
Browser viewer	Not listed	Yes
PIS overlay	Not listed	Yes

Leaseweb

Dedicated servers with portal, API, and Instant Delivery
Bare metal for databases, analytics, gaming, and e-commerce. The knowledge base lists Windows or Linux images, Volume or Premium transit, interconnects, and Layer 2 private networking. First orders are phone-verified. Instant Delivery SKUs can provision within an hour; custom builds take longer. CPU cannot be upgraded in place.
CloudStack Public Cloud on KVM
Instances run on Leaseweb-owned CloudStack KVM with general-purpose, compute, memory, and GPU-oriented families. Billing is hourly on-demand or monthly. Local NVMe is faster but slower to recover if a hypervisor fails. Central NFS storage is the higher-availability path. Each instance gets one public IPv4. Extra IPv4 is not offered yet.
S3-compatible object storage with named regions
HTTPS/S3 API buckets at nl.object-storage.io, de.object-storage.io, uk.object-storage.io, us.object-storage.io, ca.object-storage.io, and sg.object-storage.io. Leaseweb says objects are stored in three availability zones. The default S3 region name us-east-1 is a compatibility alias, not a geography. Keys are created in the Customer Portal.
Colocation with remote hands
Bring your own servers into Leaseweb halls. Shared 1U to 5U is only in AMS-01 and FR-01. Private racks and cages are for larger or more isolated deployments. Remote hands are 24/7 and included by default, with higher packages available. Colo knowledge base counts six European halls (Netherlands, Germany, UK), seven in Asia-Pacific and Oceania, and twelve in the US and Canada.
Private network and Cloud Connect to hyperscalers
Layer 2 private networking can join dedicated servers, Public Cloud, VMware products, and colo in the same DC (and some metro pairs). Cloud Connect uses Megaport SDN plus a Leaseweb router to reach AWS, Google Cloud, and Azure from selected halls (including AMS-01/02, FRA, London, WDC-02, Singapore, Montreal, Sydney). Redundant paths are Active-Standby. Delivery is quoted in business days via sales.
Customer Portal, REST API, and Terraform
Operators power-cycle, reinstall, rescue, manage IPs, attach private networks, and watch traffic graphs without a ticket for routine work. developer.leaseweb.com documents the REST API, GitHub integrations, a Terraform provider for Leaseweb Cloud, and S3 compatibility. This is not a self-hosted control plane you run yourself.

Unomed Cloud PACS

Cloud DICOM archive (VNA-style)
Central archive for studies from in-house modalities and external institutes, with DICOM export so you can take the archive with you. Storage is billed as you grow; long-term statutory retention remains the customer's duty under Unomed's terms.
Zero-footprint browser viewer (OHIF default)
Open studies in the browser with nothing installed on the workstation. OHIF is the default; other viewers can be connected on request. Unomed's GTCs state the standard viewer is not authorised for diagnostic reporting.
PACS inbox with assisted patient matching
Inbound studies land in an inbox; Unomed suggests the matching patient (including fuzzy name matches) and a human confirms. Useful when institutes send studies that do not already carry a clean order from your record.
Share via messenger and guest links
Send studies to colleagues, referrers and patients through Unomed messenger. Recipients without an account get a time-limited guest link; registered users keep the thread in case chat instead of CDs or ad-hoc portals.
Cloud Connector, Radiology Bridge and Medical API
Connect DICOM modalities like a second destination printer, autoroute from an existing institute PACS via Radiology Bridge, or integrate via DICOMweb/Medical API. Keeps on-site PACS investments when you only need outbound routing to Unomed practices.
Overlay on existing practice software
Opens studies from the patient record in supported web-based Swiss practice systems without replacing the PIS. Vendor lists 16+ systems with several official partners; desktop-only software needs a feasibility discussion.

Assurance & compliance: Leaseweb vs Unomed Cloud PACS
Assurance & compliance	Leaseweb	Unomed Cloud PACS
Independent security / no-logs audit	Not found IaaS provider, not a no-logs VPN. No public independent audit of logging practices found beyond the named ISO/SOC/PCI reports.	Not found No public independent security audit report located on unomed.ch.
ISO 27001	Vendor claimed Vendor: ISO 27001:2022 via EY CertifyPoint for Leaseweb Global B.V., Netherlands B.V., USA, Deutschland, UK, Singapore, Canada, Network B.V. Services listed: corporate infrastructure, bare metal, VPS, private/hybrid cloud, colo, web hosting, domains. Certificate download promised on the marketing security page (SPA). Independent register entry not retrieved in this pass.	Not found No ISO 27001 certificate or registry entry found on the official site.
SOC 2 / SOC 3	Partial SOC 2 published for Leaseweb Canada, Inc. colocation (Security and Availability, UHY Forbes Andersen). Several entities have SOC 1 Type II (EY / ISAE 3402) covering cloud, dedicated, colo, and web hosting.	Not found No SOC 2/3 report referenced on public pages reviewed.
GDPR / EU data protection	Vendor claimed NL entity; Clause 8 cites GDPR and the Dutch UAVG. Transfers outside the EEA only with safeguards. Global catalog still includes non-EU regions.	Vendor claimed Swiss FADP (DSG) primary; privacy policy also cites GDPR bases. Confirm DPA/ABV for your use case.
US CLOUD Act exposure (indicative)	Partial Dutch group, no known US parent, but the catalog includes US halls, Leaseweb USA, Inc., us-01 object storage, and optional Cloud Connect to AWS/GCP/Azure. NL Clause 8.3 can keep a Netherlands contract on Dutch DCs if you do not choose otherwise. Assessment row, not a vendor claim. Not legal advice.	Partial Swiss entity / no known US parent, but AWS (S3 Zurich region, Rekognition Ireland) and Firebase appear in public technical/privacy materials. Not legal advice.
Data processing agreement (B2B)	Vendor claimed Privacy page (search snippet) and NL/DE sales terms: processor language in Clause 8; standalone DPA on request in older DE terms. Sub-processor list on request (NL 8.4).	Vendor claimed GTCs require an Auftragsbearbeitungsvertrag (ABV) when patient data is processed on behalf of the healthcare provider.
EU AI Act	Not applicable IaaS compute, storage, colo, and network. Public Cloud lists small-scale GPU/inference instance types, but the offering is not an AI system product.	Not applicable PACS archive/viewer product; AI is used for assisted patient matching and other suite features, but this entry evaluates the imaging archive, not an AI-centric system.
PCI DSS	Partial Vendor: PCI DSS 4.0 scoped to physical security at named DCs (AMS-01, FRA-01, LON-01, SIN-01, WDC-02, MTL-01/02/03). Services are not meant to process card data by default.	Not listed
NEN 7510	Vendor claimed Vendor: EY statement for Leaseweb Netherlands B.V. at AMS-01 (physical security, IS policy, risk, resilience, incidents, service deployment). Not inherited by the customer.	Not listed
CISPE IaaS Code of Conduct	Vendor claimed Historical CISPE member listing and lobbyfacts affiliation. Current CISPE public register was not confirmed to contain a live Leaseweb service declaration in this pass.	Not listed
Diagnostic viewer certification	Not listed	Partial Default OHIF viewer explicitly not for diagnosis per GTCs; certified third-party viewers optional.

Considerations & known limitations: Leaseweb vs Unomed Cloud PACS
Considerations & known limitations	Leaseweb	Unomed Cloud PACS
Global catalog includes US halls and a US affiliate	Medium Even with a Dutch contractor and NL Clause 8.3, the product menu includes US dedicated halls, us-01 object storage, and Leaseweb USA, Inc. Buyers with a residency ban must lock region and entity in the order, not rely on the brand name.	Not listed
No public IaaS subprocessor register	Medium NL terms authorise EEA affiliates and other third parties as sub-processors, with the actual list on request. Known optional paths: Megaport plus AWS/GCP/Azure (Cloud Connect) and Acronis (Public Cloud backup row). Website marketing also uses US SaaS (outside the IaaS path).	Medium Privacy policy says processors can be requested at any time but does not name hosting vendors on the page. Blockers for security questionnaires until the annex is shared.
Certification scope is entity- and service-specific	Low ISO is claimed for listed IaaS services, not automatically for every SKU. SOC 2 is Canada colo. PCI is physical security only. Customers are not certified by association.	Not listed
Public Cloud / VPS IPv4 and Elastic Compute end of sale	Low Docs: one public IPv4 on Public Cloud and VPS, extras not yet available. Elastic Compute is end of sale. Dedicated CPU cannot be upgraded without a new server.	Not listed
US-group cloud components in the data path	Not listed	Medium Even with Swiss HQ and claimed Swiss image hosting, AWS and Firebase endpoints appear in public privacy/CSP materials. Procurement should obtain the named subprocessor annex and assess CLOUD Act residual risk.
Default viewer not for diagnosis	Not listed	High If radiologists must report from the included viewer, Unomed alone is the wrong shortlist item unless a certified diagnostic viewer is contracted.
No public ISO/SOC or independent audit	Not listed	Medium Assurance currently rests on vendor policies, Swiss entity status and contractual ABV rather than published certificates.

Fit

Leaseweb

Best fit when

Teams that want a KvK-identifiable Dutch contractor (Leaseweb Netherlands B.V.) for IaaS, not a US parent
Operators placing dedicated servers or colo in named halls (Amsterdam, Frankfurt, London, plus optional non-EU cities)
Workloads that need CloudStack KVM or S3-compatible buckets with an explicit nl-01 / de-01 / uk-01 endpoint
Hybrid designs that keep origin on Leaseweb metal and optionally Cloud-Connect to AWS, Google Cloud, or Azure
Buyers who will use the Customer Portal, REST API, or Terraform rather than a fully managed PaaS

Poor fit when

Organisations that forbid any US group company, US datacentre option, or US-region object storage in the same vendor catalog
Teams that need extra public IPv4 on Public Cloud or VPS (docs: one IPv4, extras not yet available)
Buyers looking for a self-hosted control plane or an open-source product they operate themselves
People who actually wanted Leaseweb Multi-CDN rather than compute and colo
Hobby or consumer hosting: NL terms state B2B only, with KYC on first order

Consider instead when

When: You want a larger managed-cloud catalog (IAM, managed databases, serverless) and accept a US parent
Consider: Amazon Web Services (AWS) or Google Cloud Platform
Different jurisdiction and product surface. Leaseweb stays IaaS-classic.
When: You want European IaaS with a simpler EU-centric hall list and strong self-serve dedicated servers
Consider: Hetzner or OVHcloud
Still diligence their own non-EU options. Neither is a Leaseweb contract.
When: You want French public cloud with object storage and more developer-cloud SKUs
Consider: Scaleway
Different product mix. Confirm current regions on Scaleway's site.
When: You mainly need a German-group host with a broad SMB catalog
Consider: IONOS
Different ownership and SKU mix than Leaseweb's local-entity IaaS model.
When: You actually needed global content delivery, not origin compute
Consider: Leaseweb CDN
Same group, different data path (partner CDNs and a Washington D.C. shield).

Unomed Cloud PACS

Best fit when

Swiss medical or dental practices that want cloud DICOM archive and sharing without an on-site PACS project
Teams that must open imaging from an existing web-based practice system rather than a second patient search
Institutes that need to autoroute studies to referring practices while keeping an existing PACS (Radiology Bridge)
Buyers who prioritise a Swiss contracting entity and vendor-claimed Swiss image residency under the FADP
Workflows that share studies with referrers or patients via links instead of CDs or one-off portals

Poor fit when

Organisations that require the included viewer to be a certified diagnostic/reporting workstation out of the box
Buyers that need a published named subprocessor list and independent ISO/SOC evidence before first sales call
Teams seeking a fully self-hosted open-source PACS they operate themselves
Hospitals needing a full RIS/PACS suite beyond practice-oriented cloud archive and sharing

Consider instead when

When: You need a European cloud PACS peer outside Switzerland or broader multi-country packaging
Consider: PostDICOM (Netherlands) or other EU cloud PACS vendors
Feature parity is not claimed; compare residency contracts and viewer certification directly.
When: You primarily need raw cloud object storage or hospital-grade imaging services on a hyperscaler
Consider: AWS or Azure health/imaging stacks with your own viewer and compliance design
More infrastructure flexibility; you own more of the clinical workflow glue.
When: You must keep all image data on premises under your sole operational control
Consider: Classic on-prem PACS plus a dedicated sharing portal
Unomed is cloud SaaS with a local connector, not a self-hosted Unomed server product.

Open questions for due diligence

Leaseweb

For the SKUs we will buy, what is the current ISO 27001 statement of applicability (and is object storage in scope)?
Will Leaseweb issue the current sub-processor list for this order, including Acronis and Megaport if used?
Can the contract freeze region to named EU halls and forbid US-affiliate access except as Clause 8.3 allows?
What is the current Instant Delivery dedicated inventory in AMS/FRA versus US halls?
Is there a live CISPE public-register declaration for these IaaS services?

Unomed Cloud PACS

Will Unomed provide the current named subprocessor list (hosting, backup, email, SMS, identity) under NDA or in the ABV annex?
Which exact Swiss data-centre operators and certifications cover the DICOM archive?
Is a CE-marked / certified diagnostic viewer required for your reporting workflow, and which third-party option will Unomed integrate?
What SLA, backup/RPO and export support apply to your Cloud PACS tier?