IONOS vs Leaseweb

Compare IONOS and Leaseweb on capabilities, jurisdiction, assurance, and fit for European buyers.

Both listed as alternatives to: Amazon Web Services (AWS), DigitalOcean, Google Cloud Platform, Hostinger, Microsoft Azure

Logo: IONOS

IONOS

Germany· Cloud Computing

Needs review

Shortlist IONOS when you want a German-operated hosting + public cloud stack with EU location choice, managed Kubernetes, S3 storage, and public BSI-oriented cloud certifications for DACH buyers. Skip when you need hyperscaler service breadth, EU-only infrastructure with no US regions or US facility partners in the path, or lowest-cost bare metal—consider OVHcloud, Scaleway, Hetzner, or STACKIT instead depending on that gap.

German SE (Montabaur)EU + US cloud regionsManaged KubernetesS3 Object StorageBSI C5 Type 1 (claimed)Domains + SMB hosting
Logo: Leaseweb

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)
IONOS vs Leaseweb: Snapshot
FeatureLogo: IONOSIONOSLogo: LeasewebLeaseweb
Country of originGermanyNetherlands
CategoryCloud ComputingCloud Computing
Open sourceNoNo
Self-hostedNoNo
HeadquartersGermanyNetherlands
Legal entityIONOS SE (HRB 24498, Amtsgericht Montabaur); group listed as IONOS Group SELeaseweb Netherlands B.V. (KvK 30141839, Amsterdam). Website: Leaseweb Global B.V. (KvK 60593652). Other local sales entities exist.
Governing lawGerman / EU (confirm per contract and national affiliate)Not listed
US parent / controlNo known US parentNo known US parent
CLOUD Act exposure (indicative)MediumMedium
Hosting / residencyIONOS-operated and partner facilities in Europe (e.g. Berlin, Frankfurt—including Equinix-operated sites—Paris, Logroño, London, Worcester, Karlsruhe) and the US (Las Vegas, Newark, Lenexa). Object Storage and compute location chosen per resource. Backup Service uses Acronis technology; managed backup path described as DE ISO 27001 centers. Optional Microsoft 365 / Google Workspace resale.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.
Summary

German hosting and cloud provider (IONOS SE): domains and SMB web hosting plus IONOS Cloud IaaS/PaaS with EU and US locations, managed Kubernetes, object storage, and DBaaS.

Dutch B2B IaaS: dedicated servers, CloudStack public cloud, colocation, and S3-compatible object storage on a global hall list under local sales entities.

Tags
At a glance: IONOS vs Leaseweb
At a glanceLogo: IONOSIONOSLogo: LeasewebLeaseweb
HQMontabaur, Germany (IONOS SE)Amsterdam, Netherlands
GroupUnited Internet / IONOS Group SE (listed)Not listed
Product linesDomains & hosting + IONOS Cloud IaaS/PaaSNot listed
Cloud regionsDE, FR, ES, UK + US (e.g. LAS, EWR, MCI)Not listed
Open sourceNo (proprietary platform)Not listed
Self-hostNoNot listed
Commercial modelHosting packages + cloud usage (per-minute style)B2B contract, monthly or hourly cloud, KYC on first order
Typical NL contractNot listedLeaseweb Netherlands B.V. (KvK 30141839)
Website operatorNot listedLeaseweb Global B.V. (KvK 60593652)
FoundedNot listed1997 (vendor 2022 press)
Product typeNot listedB2B IaaS (dedicated, cloud, colo, object storage); not self-hosted, not open source
Published dedicated DCsNot listedAMS-01/02, FRA-10, LON-01/11, MTL-02, SIN-01, HKG-10, SYD-10, plus nine US halls
Object storage regionsNot listednl-01, de-01, uk-01, us-01, ca-01, sg-01
Key capabilities: IONOS vs Leaseweb
Key capabilitiesLogo: IONOSIONOSLogo: LeasewebLeaseweb
German SE (Montabaur)YesNot listed
EU + US cloud regionsYesNot listed
Managed KubernetesYesNot listed
S3 Object StorageYesNot listed
BSI C5 Type 1 (claimed)YesNot listed
Domains + SMB hostingYesNot listed
Dutch sales entityNot listedYes
Dedicated / bare metalNot listedYes
CloudStack KVM public cloudNot listedYes
S3-compatible object storageNot listedYes
Colo + global DCsNot listedYes
ISO 27001 (claimed)Not listedYes

IONOS

  • Virtual Data Center Designer and IaaS compute

    Build isolated virtual data centers in the browser or via Cloud API: dedicated-core servers, vCPU servers, and Cubes with attached NVMe. Live vertical scaling is supported on many Linux images for cores, RAM, NICs, and volumes without a full rebuild. Locations span DE (Berlin, Frankfurt, Karlsruhe), FR, ES, UK, and US.

  • Managed Kubernetes without a separate control-plane fee

    Automated cluster and node-pool setup with geo-redundant control plane, admin API access, and optional node auto-scaling. IONOS documents the managed control plane as free of charge; you pay for the underlying compute, storage, and network only—useful for staging and production clusters on the same contract.

  • S3-compatible Object Storage across EU and US endpoints

    Contract-included Object Storage with S3 API compatibility, versioning, object lock, SSE-S3/SSE-C, and lifecycle rules. Documented endpoints include Frankfurt, Berlin, Logroño, and Lenexa (US). German object-storage locations are listed with BSI IT-Grundschutz compliance notes in the service catalog.

  • Managed databases, GPU VMs, and Berlin-hosted AI Model Hub

    DBaaS for PostgreSQL, MongoDB, MariaDB, and in-memory DB; Cloud GPU VMs (NVIDIA H200 templates) in Frankfurt; AI Model Hub with OpenAI-compatible APIs, RAG/vector support, and vendor-stated processing exclusively in Germany (Berlin). Fits teams that want European inference without standing up their own GPU estate.

  • Domains, web hosting, and personal consultant for SMBs

    Classic IONOS portfolio: domain registration, shared/VPS/dedicated hosting, site builders, and optional Microsoft 365 or Google Workspace. Differentiator for non-cloud buyers is a dedicated personal consultant plus 24/7 support channels—not pure ticket-only self-serve hosting.

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.

Assurance & compliance: IONOS vs Leaseweb
Assurance & complianceLogo: IONOSIONOSLogo: LeasewebLeaseweb
Independent security / cloud audit (beyond marketing)
Partial

BSI C5 Type 1 (2023 announcement) and IT-Grundschutz ISMS claims after external audit; not a public no-logs VPN-style audit. Request current reports and scope.

Not found

IaaS provider, not a no-logs VPN. No public independent audit of logging practices found beyond the named ISO/SOC/PCI reports.

ISO 27001
Vendor claimed

Vendor FAQ/about materials state ISO 27001 for data centers / security posture; facility partner cert PDFs also referenced on location pages. Independent cert registry entry not re-verified here.

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.

SOC 2 / SOC 3
Not found

SOC/SSAE-style attestations appear for some facility operators (e.g. Equinix listings). No clear IONOS product-level SOC 2 claim found on primary pages reviewed.

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.

BSI C5 (Cloud Computing Compliance Criteria Catalogue)
Vendor claimed

Company IR announcement 7 Nov 2023: C5 Type 1 for Compute Engine, Cloud Cubes, S3 Object Storage after external audit. Type 1 = design at a point in time; confirm current validity and product scope.

Not listed
GDPR / EU data protection
Vendor claimed

German controller/processor entities; EU location options; vendor GDPR statements. Residency still depends on selected regions and subprocessors.

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.

US CLOUD Act exposure (indicative)
Partial

German SE / no known US parent, but US subsidiaries, US host regions (LAS/EWR/MCI), Equinix facility partnership, optional Microsoft/Google products, Acronis-powered backup. Not legal advice.

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.

Data processing agreement (B2B)
Vendor claimed

Hosting DPA via account privacy flows; IONOS Cloud AVV via account manager / contract docs. Confirm entity and service annex.

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).

EU AI Act
Partial

Relevant mainly to AI Model Hub (docs discuss governance/compliance). Core hosting/IaaS is not AI-product-centric; treat AI Act as service-specific diligence.

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.

PCI DSSNot listed
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.

NEN 7510Not listed
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.

CISPE IaaS Code of ConductNot listed
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.

Considerations & known limitations: IONOS vs Leaseweb
Considerations & known limitationsLogo: IONOSIONOSLogo: LeasewebLeaseweb
US regions, US entities, and facility partners
Medium

Selecting US locations places data in the US. Even EU-only deployments sit in a group that has US subsidiaries and uses partners such as Equinix for some EU facilities—material for CLOUD Act / transfer reviews.

Not listed
No clear public subprocessor catalogue
Medium

Unlike many pure SaaS vendors, a single customer-facing subprocessor list was not found. Buyers must extract partners from location pages, DPA annexes, and product docs (Equinix, Acronis, Microsoft, Google, etc.).

Not listed
C5 Type 1 scope and freshness
Low

Public C5 claim is Type 1 for specific products (Compute Engine, Cubes, Object Storage) as of the 2023 announcement. Not a blanket certificate for every IONOS product; request up-to-date reports.

Not listed
Narrower managed ecosystem than hyperscalers
Low

Strong IaaS and selected PaaS, but not a full AWS/Azure service catalogue. Multi-region global apps and niche managed services may force multi-cloud or a different primary vendor.

Not listed
Hosting brand vs cloud platform complexity
Low

SMB hosting contracts, reseller office suites, and enterprise cloud AVVs are different commercial and compliance surfaces—do not assume one DPA covers every SKU.

Not listed
Global catalog includes US halls and a US affiliateNot listed
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.

No public IaaS subprocessor registerNot listed
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).

Certification scope is entity- and service-specificNot listed
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.

Public Cloud / VPS IPv4 and Elastic Compute end of saleNot listed
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.

Fit

IONOS

Best fit when

  • SMB and agencies needing domains, hosting, email/office resale, and a personal consultant under one German brand
  • Teams building IaaS workloads in selectable EU locations with a visual Data Center Designer and full Cloud API
  • Organizations that want managed Kubernetes, DBaaS, and S3-compatible storage without a hyperscaler contract
  • DACH public-sector or regulated buyers who need documented BSI C5 / IT-Grundschutz posture on scoped cloud products (confirm current report)
  • AI or inference pilots that prefer vendor-stated Germany (Berlin) hosting for AI Model Hub

Poor fit when

  • Buyers requiring a guarantee of no US legal entities, no US regions, and no US-group facility partners anywhere in the path
  • Workloads that depend on the full AWS/Azure/GCP marketplace, global region density, or niche managed services IONOS does not offer
  • Price-only bare-metal or Hetzner-style DIY shops that do not need managed PaaS or SMB hosting layers
  • Teams that refuse any US-group SaaS (Microsoft 365 / Google Workspace) if those bundles are part of the intended stack

Consider instead when

  • When: You want French-operated cloud with strong developer packaging and EU focus without a mass-market hosting brand

    Consider: Scaleway

    Different product mix; compare region map and managed services side by side.

  • When: You prioritize large European hosting/cloud scale and multi-country DC ownership narratives

    Consider: OVHcloud

    Both are EU groups with non-trivial international footprints—read residency options carefully.

  • When: You mainly need cost-efficient dedicated servers or simple cloud in DE/FI with minimal PaaS

    Consider: Hetzner

    Thinner managed layer; different support and SMB hosting model.

  • When: You are already in Schwarz Group ecosystems or need STACKIT-specific public-cloud positioning

    Consider: STACKIT

    Narrower commercial brand than IONOS hosting+cloud combo.

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).

Open questions for due diligence

IONOS

  • What is the current BSI C5 report type (Type 1 vs Type 2), validity period, and exact product/location scope?
  • Can IONOS provide a consolidated subprocessor and sub-processor change-notification list under the DPA/AVV?
  • Which contract entity (IONOS SE vs IONOS Cloud GmbH vs national affiliates) will sign for our workload and which TOMs apply?
  • For EU-only deployments, are any support, monitoring, or backup control-plane components processed outside the EU?
  • Is ISO 27001 held by IONOS operating companies for the full service stack, or primarily facility/operator certifications?

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?