SharePoint Online
Company of your size (≈19 PCs, ~30 users)
Yes — SharePoint Online (the cloud SharePoint included with Microsoft 365) is a sensible option for a company of your size (≈19 PCs, ~30 users) if you adopt the cloud (SharePoint Online) rather than running an on-premises SharePoint Server. It gives good collaboration, document control and removes much of the on-prem patching/attack-surface burden — but you must put strong identity and sharing controls in place. For security-sensitive setups, choose a Microsoft 365 tier that includes device & endpoint management (e.g., Microsoft 365 Business Premium).
Why SharePoint Online fits (pros)
Tight Office integration — native editing, versioning and co-authoring with Word/Excel/Teams/Outlook. Great for teams already using Office.
Centralised document control & search — easier record keeping, metadata, retention labels, and search than ad-hoc network shares.
Lower local IT overhead — Microsoft runs the platform, handles infrastructure patches, scaling and backups (if you use the cloud service), so you don’t have to manage a public-facing SharePoint server.
Scalability & licensing for SMBs — per-user plans make it easy to add/remove users and get OneDrive storage + SharePoint sites.
Built-in security features available — Conditional Access, MFA, DLP, Defender integration and Secure Score guidance to improve your posture. These are available in Business/Premium/Enterprise offerings.
Main drawbacks / risks (cons)
Complexity & training — SharePoint’s flexibility can overwhelm staff; poor site structure or permissions lead to confusion or accidental oversharing. Expect some admin time and training.
Framework IT
Cost — per-user licensing plus possible add-ons (Defender, advanced compliance) — but for 30 users costs are predictable. Decide which security features you need.
Misconfiguration & external sharing — the biggest practical risk for SMBs is human/config errors that expose files. Governance is essential.
On-premises SharePoint risks — if you self-host SharePoint Server (not SharePoint Online), recent serious zero-day exploits show internet-facing on-prem servers are high-risk and require intensive patching/monitoring. If you do not need on-prem, prefer SharePoint Online.
The latest cybersecurity issues you need to know (high level)
ToolShell / 2025 SharePoint on-prem zero-days: In July 2025 active, large-scale exploits targeted on-premises SharePoint servers (RCE vulnerabilities). Microsoft/CISA advised emergency patches and isolating internet-facing servers — these attacks do not generally affect SharePoint Online (cloud) but do affect self-hosted servers. If you run any SharePoint Server exposed to the internet you must act immediately.
Ransomware / threat actors abusing SharePoint vulnerabilities: State-linked and criminal groups (e.g., Storm-2603, Warlock/Lockbit) have exploited SharePoint bugs to deploy ransomware and perform data theft. Patching, EDR and isolating affected systems are key mitigations.
Phishing and credential theft remains a top risk: Large phishing-as-a-service operations (targeting Microsoft 365 credentials) are still active; stolen credentials are the primary way attackers access cloud resources. Enforce MFA and conditional access.
Misconfiguration and excessive sharing cause data leaks: Even without exploits, wrongly configured permissions and open external links are common causes of data exposure in SharePoint/OneDrive. Governance and periodic audits are required.
Practical recommendation (what you should do next)
Use SharePoint Online (cloud) — not on-premises SharePoint Server, unless there’s a legal/technical reason to host locally. Cloud avoids the recent high-risk on-prem attack surface.
Choose Microsoft 365 Business Premium if you want built-in device management (Intune), advanced security and Defender features for endpoints — that level gives the best protection for an SMB of your size.
Immediate security baseline (apply now):
Enforce MFA for all users.
Configure Conditional Access (block legacy auth, restrict risky sign-ins).
Turn on Microsoft Defender for Business (or equivalent EDR) on all endpoints.
Harden external sharing (limit to specific domains, use expiration links) and review site permissions monthly.
Use Microsoft Secure Score and follow its prioritized recommendations.
Regular backups (third-party backup for SharePoint/OneDrive is recommended — cloud retention is not a substitute for backup).
Governance & training: define site templates, document lifecycle rules, a small permissions model (avoid giving many users site-owner rights), and run phishing awareness + simulated phishing.
If you have any on-prem SharePoint servers today: disconnect internet access until patched, rotate cryptographic keys/ASP.NET machine keys, and engage incident response if you suspect compromise. Follow Microsoft/CISA guidance.
Quick cost/plan note
SharePoint Online is included in many Microsoft 365 business plans; Business Premium adds device management and stronger Microsoft security features. Pricing varies by region—check your Microsoft business plan page or your reseller. For SMBs, Business Premium is commonly recommended when you want both productivity apps and serious security.
Alternatives (brief)
Google Workspace — simpler admin panel, good for collaboration but different feature set and third-party integrations.
Nextcloud / self-hosted file servers — full control and privacy but higher admin cost and you take on patching/security responsibility (not recommended unless you have strong in-house IT).
Consider hybrid: OneDrive/SharePoint Online for collaboration + minimal on-prem NAS for large legacy data if needed.
One-page actionable checklist you can implement this week
Buy Microsoft 365 Business Premium (or confirm existing plan includes SharePoint Online + Intune/Defender).
Enforce MFA for everyone.
Block legacy auth & enable Conditional Access baseline.
Enable Defender for Business on all 19 machines.
Audit SharePoint/OneDrive external sharing and set link expirations.
Schedule a user training (30–45 min) on phishing + safe sharing.
