IONOS vs SiteGround

Comparez IONOS et SiteGround sur les capacités, la juridiction, les garanties et l'adéquation pour les acheteurs européens.

Tous deux listés comme alternatives à: Bluehost, GoDaddy, Google Cloud Platform, Hostinger

Logo: SiteGround

SiteGround

Bulgaria· Web Hosting and Cloud Computing

Needs review

Shortlist when you want managed WordPress or PHP hosting with an EU or UK contract, a named European Google Cloud region, and Site Tools. Skip when you need EU-owned metal with no US-group cloud. Consider IONOS, OVHcloud, Scaleway, or Hetzner instead in that case.

EU-operated (BG origin, ES/UK contracts)Managed WordPress / PHP hostingGoogle Cloud regions (not EU-only)Site Tools control panelSuperCacherDPA in TOS pack
IONOS vs SiteGround: Aperçu
CaractéristiqueLogo: IONOSIONOSLogo: SiteGroundSiteGround
Pays d'origineGermanyBulgaria
CatégorieCloud ComputingWeb Hosting and Cloud Computing
Open sourceNonNon
Auto-hébergéNonNon
SiègeNon indiquéBulgaria
Entité légaleNon indiquéSiteGround Hosting EOOD (BG UIC 204181297). EU: Spain S.L. B-87194171. UK: Hosting Ltd 09348602. US storefront: SG Hosting Inc.
Maison mère / contrôle USNon indiquéAucune maison mère US connue
Exposition CLOUD Act (indicative)Non indiquéMoyen
Hébergement / résidenceNon indiquéPrimary hosting: Google Cloud Platform in customer-chosen SiteGround regions (Europe: Madrid, Eemshaven, Frankfurt, Paris, London; plus US and APAC). CDN: SiteGround CDN on the Google Cloud edge network (global, including US). Backups: vendor says geographically separate / offsite on Cloud. No public dated subprocessor register found. Payments, analytics, and third-party AI models are mentioned in privacy/TOS.
Résumé

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.

Sofia-origin managed web and WordPress hosting on Google Cloud, with Site Tools, SuperCacher, and EU or UK contracting entities depending on storefront.

Tags
En un coup d'œil: IONOS vs SiteGround
En un coup d'œilLogo: IONOSIONOSLogo: SiteGroundSiteGround
HQ / originNon indiquéSofia, Bulgaria (founded 2004, privately owned)
EU contractNon indiquéSiteGround Spain S.L. (CIF B-87194171, Madrid)
UK contractNon indiquéSiteGround Hosting Ltd (09348602)
BG operating companyNon indiquéSiteGround Hosting EOOD (UIC 204181297)
US storefrontNon indiquéSG Hosting Inc. (Delaware)
InfrastructureNon indiquéGoogle Cloud (customer-chosen region + global CDN)
Control panelNon indiquéSite Tools (not cPanel)
Open source / self-hostNon indiquéNo / no
Commercial modelNon indiquéPrepaid subscription (shared StartUp/GrowBig/GoGeek and Cloud). Confirm live site.
Key capabilities: IONOS vs SiteGround
Key capabilitiesLogo: IONOSIONOSLogo: SiteGroundSiteGround
EU-operated (BG origin, ES/UK contracts)Non indiquéOui
Managed WordPress / PHP hostingNon indiquéOui
Google Cloud regions (not EU-only)Non indiquéOui
Site Tools control panelNon indiquéOui
SuperCacherNon indiquéOui
DPA in TOS packNon indiquéOui

IONOS

  • Services d'hébergement et domaine diversifiés

    IONOS fournit hébergement mutualisé, VPS, dédié et cloud évolutif pour tout besoin. Enregistre 22 millions+ domaines et inclut domaine gratuit première année sur nombreux plans. Builders sites intègrent IA pour setups rapides ; outils eCommerce gèrent boutiques en ligne. E-mail intègre Microsoft 365 ou Google Workspace, assurant communication fiable sans dépendances tierces.

  • Infrastructure cloud avancée

    Plateforme offre clusters Kubernetes managés, bases MongoDB et PostgreSQL, stockage objet, serveurs GPU et AI Model Hub pour workloads machine learning. Centres Tier IV pour redondance. Clients accèdent 99,99 % uptime, options computing haute performance pour entreprises exécutant applications complexes.

  • Sécurité, support et durabilité

    Protection DDoS sécurise sites, complétée certificats SSL gratuits. Support 24h/24 téléphone, chat et e-mail, consultants personnels assignés aux comptes. Tous centres utilisent énergie 100 % renouvelable, aligné Climate Strategy 2030 visant réduction émissions via biocarburants et partenariats fournisseurs.

SiteGround

  • Customer-chosen Google Cloud data center

    You pick a SiteGround location at signup and can relocate later from the Client Area (per site on shared plans, per plan on Cloud). Documented European data-center cities include Madrid, Eemshaven, Frankfurt, Paris, and London. US and APAC locations exist on the same map. The fleet runs on Google Cloud. This is not an EU-only host.

  • SuperCacher (NGINX, Dynamic Cache, Memcached)

    SiteGround's own caching stack: NGINX Direct Delivery for static files, Dynamic Cache in RAM for generated pages, and Memcached for database and API objects. All clients manage it in Site Tools > Speed > Caching. It is a host-level accelerator, not a substitute for application-level cache plugins when you need custom rules.

  • Site Tools instead of cPanel

    The company replaced cPanel with its in-house Site Tools panel for DNS, email, PHP, SSL, Git, backups, and caching. Useful if you want a single vendor UI. Poor fit if your runbooks assume WHM/cPanel, standard cPanel plugin hooks, or reseller WHM.

  • WordPress staging on mid-tier and Cloud plans

    A one-click staging copy, edit, and push-to-live flow is documented for GrowBig, GoGeek, and Cloud. The company says it takes an automatic backup before a staging push. StartUp is not listed as including this tool. Pair with the SiteGround Security plugin if you want the vendor's WP hardening pack.

  • Daily backups with self-serve restore

    Site Tools > Security > Backups lists automatic daily copies: up to 30 on shared plans, up to 7 on Cloud. Restores can be full or files/database only. Academy copy says shared backups are stored in a geographically separate location. Premium Backup is a paid add-on. Destination cloud for those copies is not published as a separate provider list.

  • Server-level WAF and AI anti-bot

    The company describes a custom WAF with rules written by its security team for common CMS exploits, plus an AI anti-bot layer that it says blocks large volumes of brute-force traffic before it hits customer sites. These are vendor-operated controls, not a customer-auditable WAF appliance you can export rules from.

Assurance & compliance: IONOS vs SiteGround
Assurance & complianceLogo: IONOSIONOSLogo: SiteGroundSiteGround
Independent security / no-logs auditNon indiqué
Not found

No public independent security or no-logs audit PDF found. Vendor describes in-house WAF and AI anti-bot.

ISO 27001Non indiqué
Not found

No current SiteGround ISO 27001 certificate found. 2021 staff comment: not certified; rely on Google Cloud certifications.

SOC 2 / SOC 3Non indiqué
Not found

No SiteGround SOC 2/3 report found. Historical support replies pointed customers at Google Cloud documentation.

GDPR / EU data protectionNon indiqué
Vendor claimed

EU/UK entities and public DPA in the TOS pack. Controller depends on storefront (Spain SL vs UK Ltd vs US Inc).

US CLOUD Act exposure (indicative)Non indiqué
Partial

European HQ and contracting for EU/UK, no known US parent, but primary infrastructure is Google Cloud (US-group) with optional US regions and a global GCP CDN. Not legal advice.

Data processing agreement (B2B)Non indiqué
Vendor claimed

DPA is incorporated in the TOS pack for EU/UK storefronts.

EU AI ActNon indiqué
Not found

Product includes Coderick AI and AI Studio. No public AI Act classification or compliance statement found. TOS says third-party providers may use Inputs/Outputs to improve models.

Considerations & known limitations: IONOS vs SiteGround
Considerations & known limitationsLogo: IONOSIONOSLogo: SiteGroundSiteGround
Google Cloud as primary infrastructureNon indiqué
Medium

Since 2020 SiteGround has run hosting on Google Cloud. A European region does not remove US-group cloud exposure. Badging this product as EU-only infrastructure would be wrong.

Contracting entity depends on storefrontNon indiqué
Medium

The same brand signs as Spain S.L., UK Ltd, or Delaware Inc. depending on scid/region. US privacy.htm names SG Hosting Inc. as controller. Procurement must capture the entity on the order, not the brand name.

Vendor can relocate data centersNon indiqué
Medium

TOS 4.2 allows SiteGround to move accounts between data centers or jurisdictions for quality, continuity, or security. Non-emergency jurisdiction changes have a 10-day objection window. Emergency moves may happen without prior notice.

No public SiteGround ISO/SOC certificateNon indiqué
Medium

Assurance for many RFPs will be Google Cloud's reports plus SiteGround's DPA and internal WAF, not a SiteGround ISO 27001 or SOC 2 badge.

Third-party AI may retain Inputs and OutputsNon indiqué
Medium

TOS 4.6.3: third-party AI providers may store and use Inputs and Outputs to provision and improve models. SiteGround advises against putting confidential or personal data in prompts.

No standalone public subprocessor registerNon indiqué
Low

Google Cloud is named. A dated annex listing backup, email, support, analytics, and payment subprocessors was not found as a standalone page.

Adéquation

IONOS

Best fit when

Non indiqué

Poor fit when

Non indiqué

SiteGround

Best fit when

  • Agencies and SMBs that want managed WordPress or PHP hosting with 24/7 vendor support and Site Tools instead of raw VMs
  • EU buyers who will contract with SiteGround Spain S.L. and pin production to Madrid, Eemshaven, Frankfurt, or Paris
  • UK buyers who will contract with SiteGround Hosting Ltd and can use the London Google Cloud location
  • Teams that want SuperCacher, daily self-serve restores, and (on GrowBig/GoGeek/Cloud) one-click staging
  • Workloads that already accept Google Cloud as infrastructure and need a managed layer on top

Poor fit when

  • Organisations that ban US-group clouds (AWS/GCP/Azure) regardless of region
  • Buyers who need a public ISO 27001 or SOC 2 certificate in SiteGround's own name
  • Teams whose automation depends on cPanel/WHM rather than Site Tools
  • IaaS, Kubernetes, or root-server use cases better served by IONOS Cloud, OVHcloud, Scaleway, or Hetzner
  • StartUp-plan sites that require staging (documented on GrowBig, GoGeek, and Cloud only)

Consider instead when

  • When: You need EU-owned infrastructure with no Google Cloud or other US-group IaaS underneath

    Consider: IONOS, OVHcloud, Scaleway, or Hetzner

    Those peers are closer to metal or EU public cloud. SiteGround is a managed host on GCP.

  • When: You want a European-origin shared host comparison rather than IaaS

    Consider: Hostinger (catalog incumbent) or Swissnode

    Different panels and footprints. Confirm each operator's contracting entity and hoster.

  • When: You need a current ISO 27001 or SOC 2 report from the hosting brand itself

    Consider: IONOS or another certified EU host after checking their live trust center

    SiteGround staff said in 2021 they were not ISO certified. Relying on GCP certs is not the same as a SiteGround cert.

Open questions for due diligence

IONOS

Non indiqué

SiteGround

  • Which exact legal entity and TOS scid will this order use (Spain S.L., UK Ltd, or US Inc.)?
  • Will SiteGround contractually lock the production region (for example Eemshaven or Madrid) and notify before any jurisdiction change?
  • Can they provide a current subprocessor list covering backups, email, support, analytics, payments, and AI vendors?
  • Is there a current ISO 27001, SOC 2, or other audit letter in SiteGround's name, or only Google Cloud shared-responsibility materials?
  • For AI Studio / Coderick: which model vendors are used, is training on customer Input disabled under a B2B addendum, and is there an AI Act position?