Google Workspace vs Microsoft 365 for Regulated Small Firms

Is Google Workspace or Microsoft 365 better for a regulated small firm?

Neither one is better for everyone. Both can meet HIPAA, FTC Safeguards, and similar rules once they’re configured. Pick Microsoft 365 if your office runs Windows desktops and software that expects Outlook and Excel. Pick Google Workspace if your team works in a browser and shares documents all day. Then lock down whichever one you chose.

We run both for clients. The ones that get firms in trouble aren’t the wrong platform. They’re the right platform left on defaults. Every point below comes from Microsoft’s and Google’s own admin and compliance documentation. We’ve left prices out on purpose, because editions and prices change more often than this page will.

Do you need desktop Office apps, or is the browser enough?

If people at your firm build real spreadsheets, redline long documents, or run software that hooks into Office, you need the desktop apps. Microsoft 365 includes them in some plans and not others. Google Workspace is built around the browser.

Microsoft’s plan comparison lists the desktop client apps as included in Business Standard and Business Premium, but not in Business Basic. Basic gets the web versions only. That trips up firms that bought the cheapest plan and then wonder why Excel won’t install.

Google Docs, Sheets, and Slides run in the browser. For a lot of teams that’s a feature: nothing to install, nothing to patch, and everyone edits the same copy. It gets harder when a CPA lives in pivot tables and macros, or a paralegal works in heavily formatted Word templates that come back from opposing counsel.

Will your line-of-business software work with it?

Ask your software vendor before you pick a platform. A lot of accounting, tax, practice management, and title software expects Outlook on the desktop. It ships an Outlook add-in, exports straight to Excel, or sends mail through Outlook or SMTP.

We’ve seen this firsthand. QuickBooks Desktop’s Send Forms feature can hand mail to Outlook or SMTP instead of Intuit’s webmail flow. That’s the longer-term fix we recommended when a client’s QuickBooks couldn’t email invoices.

Google does offer a bridge. Google Workspace Sync for Microsoft Outlook lets people keep using Outlook against a Google mailbox, syncing mail, calendar, contacts, notes, and tasks. Google’s own documentation warns that some Outlook features “aren’t available or might not work as you’d expect.” If Outlook is central to how your firm works, that warning matters.

Which one has better security controls?

Both can enforce MFA for every user. What differs is the default, and which edition unlocks the deeper controls.

Microsoft 365. Every Microsoft 365 for business plan includes security defaults, which require everyone to register for MFA and block legacy sign-in protocols. Microsoft says security defaults are on by default in Microsoft 365 for business. Business Premium adds Microsoft Entra ID P1, which is where Conditional Access lives. That’s granular sign-in policy, such as letting only managed devices reach company mail. It also adds Intune Plan 1 for full device management and Defender for Business for endpoint protection. Basic and Standard only get Basic Mobility and Security, a limited subset of Intune.

Google Workspace. In Google Workspace, 2-Step Verification enforcement is Off until an admin turns it on. Google’s 2SV deployment guide treats enforcement as a step an admin takes after users enroll. Users can be enrolled while the tenant still lets a password-only login through. Google’s version of conditional access, Context-Aware Access, is listed for Enterprise, Frontline, and Education editions and Cloud Identity Premium. It isn’t on the list for the Business editions most small firms buy. Device control comes through Google endpoint management, with basic and advanced levels for mobile devices.

The off-by-default problem isn’t hypothetical. In our BEC wire fraud report, an attacker got into a title closer’s Google Workspace inbox and sent fake wire instructions on a live closing. Users had 2SV enrolled, but the tenant didn’t enforce it. A phone call to the other side stopped the wire. Flipping the enforcement toggle would have stopped the login.

Which one meets HIPAA and retention requirements?

Both sign a HIPAA Business Associate Agreement, and both say the BAA alone doesn’t make you compliant. Retention and legal hold are available on both, but only on certain editions.

BAA. Microsoft’s HIPAA BAA comes by default through its Data Protection Addendum for covered entities and business associates. Exchange Online, SharePoint Online, OneDrive, and Teams are in scope. Google’s BAA has to be accepted by an administrator in the Admin console, under Account settings, then Legal and compliance. Google is blunt about it: customers without a signed BAA “must not use PHI” in Workspace, and third-party add-ons aren’t covered. Our HIPAA-compliant email guide goes deeper on what else HIPAA expects.

Retention and eDiscovery. On Google, that’s Vault, which lets you retain, hold, search, and export users’ data. Google lists Vault licenses as included in Business Plus and the Enterprise editions. Business Starter and Business Standard aren’t on that list. On Microsoft, the Purview service description lists Business Premium among the licenses that cover organization-wide retention policies. Audit (Standard) logging is in Business Basic, Standard, and Premium. A mailbox hold needs Exchange Online Plan 2 or the Exchange Online Archiving add-on.

A law firm that may face a litigation hold, or an advisor with records-keeping rules, should settle this before buying. Don’t find out after a matter starts.

How hard is it to switch later?

It’s a planned project, not a weekend. Mail, calendars, and contacts move with supported tools. Some things don’t make the trip.

Microsoft’s Google Workspace migration guide covers mail and rules, calendar, and contacts, moved in batches. It also lists what doesn’t come across: shared calendars, room bookings, vacation and auto-reply settings, and Gmail tags on contacts. Migrated rules arrive turned off. Retention and archive policies on the source can make messages look “missing” during verification, so Microsoft recommends turning them off first.

None of that is a reason to stay on the wrong platform. It’s a reason to scope the move properly. If you’re already leaning toward Microsoft, our Google Workspace to Microsoft 365 migration page covers how we test with real mailboxes and cut over nights and weekends.

Key takeaways

What this looks like when we do it

We start with how your office actually works: the software you run, who needs desktop Excel, and what your regulator or insurer will ask for. Then we recommend a platform and an edition. Sometimes that means staying put and fixing the configuration.

Either way, we set it up to a baseline, not to defaults. That means MFA enforced across the whole tenant, a signed BAA on file where PHI is involved, retention set to match your rules, mail forwarding locked down, and devices under management. On Microsoft, that’s our Microsoft 365 administration work. We handle Google Workspace tenants to the same standard. When a firm needs to move, the email migration runs as a separate, tested project.

Not sure which one your firm should be on? Book a call and we’ll go through it with you.