As of 6 Nov 2026, the panel rates Google Workspace 2.5/5 and Microsoft 365 Business 3/5 in Business Email & Office Suites. Weighted by what each judge cares about, 0 of the 6 judges pick Google Workspace and 6 pick Microsoft 365 Business. Google Workspace scores higher on 2 of 7 criteria (Pricing transparency and European sovereignty). Microsoft 365 Business scores higher on 5 of 7 criteria (Migration, open standards & exit, Calendar, contacts & office apps, Mail, domains & deliverability, plus 2 more). Provenance — Google Workspace: Rest of world; Microsoft 365 Business: Rest of world. Ratings are the AI panel’s opinion, formed from public evidence: how scores are made.
Microsoft 365 Business holds the higher mean on five of seven criteria: mail and deliverability 7.0 to 5.7, calendar and office 7.5 to 6.0, migration and portability 7.0 to 4.3, administration and identity 6.3 to 5.2, security and compliance 6.5 to 5.8, with six judges leaning its way on mail, calendar and office, and migration. Elsewhere the benches split: security three lean Microsoft 365 Business to three ties, administration four lean to two ties, sovereignty 4.7 versus 4.5 with two judges leaning Google Workspace, one leans Microsoft 365 Business, three tie. Google Workspace is ahead on pricing transparency, 6.8 to 5.8, five judges leaning its way with one tie. Its privacy policy states servers operate worldwide; Microsoft 365 Business pages state customer data continues to be transferred outside the EU Data Boundary in limited circumstances. Judge totals, where published, run 5.1–5.7 for Google Workspace and 5.9–6.6 for Microsoft 365 Business.
Choose Google Workspace if
You need euro prices published for the three business tiers before committing: pricing transparency means run 6.8 versus 5.8, with five judges leaning Google Workspace and one tie.
Your budget process requires billing options beyond annual: the Microsoft 365 Business verdict states annual billing only shown, while pricing transparency leans five judges to Google Workspace, none to Microsoft 365 Business, with one tie.
Your evaluation weights pricing transparency and sovereignty above the other criteria: those are the two means favoring Google Workspace (6.8 to 5.8 and 4.7 to 4.5), with five and two judges leaning its way respectively.
Your data-protection review screens out pages stating outbound transfers: Microsoft 365 Business pages state customer data continues to be transferred outside the EU Data Boundary in limited circumstances, and the sovereignty bench leans two judges Google Workspace, one Microsoft 365 Business, three tie.
Choose Microsoft 365 Business if
You need documented per-plan mail limits and quarantine for your team: mail and deliverability means run 7.0 versus 5.7, with six judges leaning Microsoft 365 Business.
You are moving mail from another platform and want documented entry paths: migration and portability means run 7.0 versus 4.3, six judges leaning Microsoft 365 Business; the Google Workspace verdict found no public information on what its Migrate tool carries over.
Your staff spend the day in Word, Excel and PowerPoint: calendar and office means run 7.5 versus 6.0, six judges leaning Microsoft 365 Business, with the verdict scoring calendar and office 7 to 8.
Your administrators manage identity for many users: administration and identity means run 6.3 versus 5.2, four judges leaning Microsoft 365 Business and two tied.
You must show documented retention to auditors: security and compliance means run 6.5 versus 5.8, three judges leaning Microsoft 365 Business with three ties, and the verdict records retention documented deeply.
Read this comparison as one judge. Each weighs the same scores by what they care about.
The IT Administrator
IT administrator at a machine builder in Baden-Württemberg with three hundred mailboxes, an on-premises Exchange that reaches end of support, and Active Directory as the source of every account. Wants Outlook to keep working without a plug-in nobody maintains, shared mailboxes and room booking, single sign-on and directory sync, mobile devices that can be wiped, an API for provisioning, and a migration that moves calendars and permissions, not only mail.
Google Workspace
Microsoft 365 Business
This judge's pick
Criterion by criterion
Mail, domains & deliverability
Google Workspace
Mailboxes on the company domain with IMAP, send-as aliases, delegation inside the organisation and server-side filters are documented, spam and phishing protection is quoted at blocking more than 99.9% of attacks, and Postmaster Tools exists for delivery monitoring. For my Outlook population, though, we found no public information here on ActiveSync or MAPI, DKIM/DMARC, catch-all, or send and attachment limits.
Microsoft 365 Business
Exchange Online is documented as a full hosted mailbox platform: quotas of 50 GB and 100 GB per plan (2 GB for Kiosk), default message sizes of 35 MB sending and 36 MB receiving with administrator-configurable limits up to 150 MB, anti-spam and anti-malware with multiple engines across all plans, quarantine an administrator manages, shared mailboxes up to 50 GB without a license, ActiveSync policies, and custom outbound routing with SMTP relay. That covers the working set for my three hundred mailboxes. We found no public information on SPF, DKIM, DMARC or MTA-STS, catch-all or plus addressing, or the delivery reputation of the outbound infrastructure, so it stays below the top level.
Calendar, contacts & office apps
Google Workspace
This is a genuine office bundle — Calendar, Meet, Chat, Drive, Docs, Sheets and Slides are included, interoperability with Office files is stated for all plans, shared drives and video meetings up to 1,000 participants are tiered, and appointment booking starts at Standard. We found no public information on room and resource booking with approval, free/busy across providers, CalDAV or CardDAV, or Outlook calendar sync — the calendar pieces an Exchange shop lives on.
Microsoft 365 Business
Conference room management, resource mailboxes, calendar sharing and federated sharing are documented, and the API reaches calendar data in shared as well as primary mailboxes, which covers the delegation model I run today. Word, Excel, PowerPoint and Outlook ship for desktop, web and mobile in the same plans, with Teams, 1 TB OneDrive per user, and global address lists and offline address books for the company directory. We found no public information on browser co-editing, video meetings, cross-organisation free/busy or accessibility conformance, so I cannot place it at the top level.
Security, encryption & compliance archiving
Google Workspace
Transport encryption and two-step verification are stated, S/MIME arrives with the Enterprise tier, Vault to retain, archive and search data plus eDiscovery come from Plus, and DLP, a security center and access transparency sit on Enterprise. The captured pages give no certifications, no encryption at rest, no GoBD archiving and no transparency report on authority requests — exactly what my compliance officer would demand before signing.
Microsoft 365 Business
S/MIME signing and encryption, message encryption with a 100 MB limit, and single item and deleted mailbox recovery are documented, and the retention side is unusually deep: retention policies across Exchange, SharePoint, OneDrive, Teams and Copilot locations, up to 1,800 policies per tenant, 50 holds per mailbox, record declaration with proof of disposition for up to seven years, and content search with label conditions. We found no public information on two-factor enforcement, encryption at rest, certifications such as ISO 27001 or BSI C5, GoBD-compliant archiving, or a transparency report on authority requests, so the compliance archiving is better evidenced than the security attestations.
Administration, identity & partner management
Google Workspace
An admin side is evidenced — administrators manage data regions and view status reports, endpoint management is tiered, and Secure LDAP plus Cloud Identity Premium sit on Enterprise — and a RESTful Gmail API is documented, though it covers mailbox access and sending rather than provisioning. We found no public information on Active Directory or Entra sync, SAML or OpenID Connect single sign-on, SCIM provisioning, remote wipe, audit logs or support response times, which is precisely how I run three hundred accounts from our AD.
Microsoft 365 Business
The Microsoft 365 admin center, Exchange admin center and remote PowerShell are documented, Exchange Online integrates fully with Microsoft Entra ID with group-policy management, and API provisioning is strong: Microsoft Graph with SDKs, and PowerShell to provision users, groups and teams, pull usage reports and send security alerts. Mobile devices run under ActiveSync policies with documented device and deletion limits. We found no public information on directory synchronisation with Active Directory, SCIM, exportable audit logs, reseller accounts managing several customers, or support response times, which is what I would still need to run this for a machine builder.
Migration, open standards & exit
Google Workspace
A Google Workspace Migrate tool is listed from the Standard tier and the API names email account migration as a use case, IMAP is documented, and users can export a copy of their content or delete the entire account. The pages do not say what the migration tool moves — calendars, contacts, mailbox permissions — nor anything about coexistence with free/busy, admin-level export of the whole organisation, or a data-return period after cancellation.
Microsoft 365 Business
Migration from my on-premises Exchange is documented three ways — cutover for up to 2,000 mailboxes (realistically 150), staged for Exchange 2003/2007 beyond 2,000, and hybrid for gradual moves keeping both on-premises and online mailboxes — plus IMAP from Gmail and Exchange, a PST import service by network upload or drive shipping, cross-tenant migration, Express migration and FastTrack specialists. The IMAP path is explicitly limited to mail folders, with contacts, calendar items and tasks left to the user. We found no public information on permissions or free/busy moving during coexistence or on a data return period after cancellation; deletion of all associated data on cancellation is stated.
European sovereignty
Google Workspace
Administrators can pin covered data to a European Union region with the covered editions listed, Google Ireland Limited is the responsible entity for users in the EEA and Switzerland, and a Cloud Data Processing Addendum is published and incorporated into the agreement. Against that stand servers operated worldwide with processing outside the user's country possible, a US parent, uncovered editions and separately managed AppSheet residency, and no named subprocessors or certifications on these pages.
Microsoft 365 Business
The EU Data Boundary documentation commits Microsoft to store and process customer data for Microsoft 365 tenants with an EU or EFTA sign-up location, in datacenter countries including Germany, France, the Netherlands and Ireland, with pseudonymised system logs and minimum-retention policies for each log type. The parent is a US company, the same documentation states customer data will continue to be transferred outside the boundary in limited circumstances, and Multi-Geo customers are out of scope. We found no public information on a data processing agreement, an EU contracting entity, or a subprocessor list with locations.
Pricing transparency
Google Workspace
Prices are public for three tiers with both introductory and regular per-user figures (the introductory price covering the first 20 users for 12 months), storage per tier from 30 GB pooled to 5 TB per user, a 300-user cap on business plans, monthly billing and a stated 16% saving on annual commitment. Not computable from the captured pages: the Enterprise tier's price, support upgrades described only as a paid upgrade, and VAT treatment.
Microsoft 365 Business
Exact figures are public — Business Basic at 6,07 € per user per month with annual billing, Standard and Premium at 20,36 € and 27,73 € (both shown bundled with Copilot Business), all excluding VAT — with the one-month trial conditions, a 7-day withdrawal right, cancellation through the admin center, mailbox quotas per plan, 1 TB OneDrive per user, and shared mailboxes and conference rooms without a subscription. We found no public information on monthly versus annual billing comparison, the plan prices without Copilot, or add-on prices such as the 100 GB shared mailbox upgrade, extra storage or additional domains, so I cannot fully compute the annual cost for three hundred mailboxes.
Sovereignty, side by side
Dimension
Google Workspace
Microsoft 365 Business
Legal entity
Not determined
Not determined
Hosting location
Not determined
Not determined
Hosting options
Not determined
Not determined
Open source
Not determined
Not determined
Data processing agreement
Not determined
Not determined
Transfer impact assessment
Not determined
Not determined
Questions about Google Workspace and Microsoft 365 Business
Which is better, Google Workspace or Microsoft 365 Business?
As of 6 Nov 2026, the panel rates Microsoft 365 Business higher: 3/5 against 2.5/5. Weighted by what each judge cares about, 0 of the 6 judges pick Google Workspace and 6 pick Microsoft 365 Business. Which one fits depends on the criteria that matter to you; the table on this page shows both side by side, and each judge’s reading has its own page. Both were scored by the same AI bench under the same rubric, from public evidence only, as the methodology describes.
Is Google Workspace or Microsoft 365 Business European?
Google Workspace is not European by provenance (Rest of world). Microsoft 365 Business is not European by provenance (Rest of world). Provenance is read from each company’s own legal pages: who builds it and who owns it.