Microsoft 365 set up, secured and supported for Sussex businesses
Licensing, migrations, security hardening, Teams, SharePoint and day-to-day admin, handled by our Burgess Hill team.
- Support from £15 per user per month + VAT, without device support
- Sussex-based team since 1996
Everything Microsoft 365, under one roof
Security hardening
Multi-factor authentication for everyone, Conditional Access, Microsoft Defender, safer email settings and regular Secure Score reviews, so a stolen password is not a disaster.
Licensing review and setup
We check which plans you are paying for, remove licences nobody uses, and make sure each person has the features they need, from Business Basic to Business Premium.
Teams and SharePoint
Teams, channels and SharePoint sites set up around how you actually work, with sensible permissions and external sharing that does not leak data.
Day-to-day admin and support
New starters, leavers, shared mailboxes, password resets and “why isn’t Outlook working” calls, handled by a local helpdesk.
Microsoft 365 backup
Microsoft keeps the service running, but deleted and overwritten data is only kept for a limited time. We add independent backup of mailboxes, OneDrive, SharePoint and Teams. Backups are held in UK data centres.
Migrations
Planned moves from Google Workspace, older Exchange servers, another Microsoft 365 tenant or on-site file shares, usually done out of hours so your team is not disrupted.
Moving to Microsoft 365, without the disruption
- Google Workspace
- Older Exchange servers
- Another Microsoft 365 tenant
- On-site file shares
Microsoft 365- Exchange Online
- OneDrive
- SharePoint
Is your Microsoft 365 set up safely?
Most tenants we look at were set up quickly and never revisited. Tick anything that applies, or that you’re not sure about.
These are the gaps we find most often. Tick any that might apply to you.
Get a free IT review
A well-configured tenant is a big step towards Cyber EssentialsMulti-factor authentication, admin account separation and secure settings cover a lot of what Cyber Essentials asks for. Devices, firewalls and software updates matter too. ABCOM is an NCSC Assured Service Provider – Cyber Advisor (Cyber Essentials).
Microsoft 365 on its own, or as part of Managed IT
Some clients just need a migration or a security tidy-up. Others want us to look after everything. Both are fine.
Microsoft 365 support
Without device supportBest for: Teams that want someone to call for Microsoft 365
Get a free IT reviewMicrosoft 365 projects
Project or ad-hocBest for: In-house IT teams, or a specific job done well
Get a free IT reviewIncluded in Managed IT
All-in-oneBest for: One monthly service for your whole IT
See Managed IT servicesWhich Microsoft 365 plan do you need?
Most small businesses choose between these three, designed for up to 300 users. We can mix plans so each person has what they need.
Business Basic
The essentials- Web and mobile apps
- Email and Teams
Business Standard
Everything in Basic, plus:- Desktop Office apps
Business Premium
Everything in Standard, plus:- Intune device management
- Conditional Access
- Microsoft Defender for Business
Thinking about security? See upgrading to Business Premium.
What our clients say
“Great service from the team at ABCOM. Regular support across Microsoft 365 (Office 365), email, Teams, etc for a number of years now. Great support for businesses in Brighton / Sussex.”
- The problem
- Outdated systems and ad-hoc support couldn’t keep up with growth.
- What we did
- Fully managed IT with Microsoft 365, SharePoint and Teams, monitoring, secure backups and a managed firewall.
From review to ongoing support
A clear plan up front, no surprises, and one team looking after it afterwards.
- Step 1
Review
We look at your licences, security settings, sharing and backup, and explain what we find in plain English.
- Step 2
Clear plan
You get a written plan and a fixed quote for any project work, with priorities agreed together.
- Step 3
Migrate and harden
We carry out the work out of hours where possible, test everything and help your team on the first morning.
- Step 4
Ongoing support
Our helpdesk handles changes and problems, and we keep your settings in line as Microsoft updates the platform.
Book your Microsoft 365 review
We will look at your licences, security and backup, and give you a clear, no-obligation plan.
Prefer to talk? 01444 871 200
More from our Microsoft 365 team
Local IT support across Sussex: Burgess HillBrighton & HoveCrawley
Microsoft 365 questions answered
Questions about Copilot and AI? See our AI & Copilot FAQs
Microsoft 365 is a trademark of the Microsoft group of companies.
Which Microsoft 365 plan does my business need?
Most small businesses choose between Business Basic, Business Standard and Business Premium, which are designed for up to 300 users. Basic covers web and mobile apps with email and Teams, Standard adds the desktop Office apps, and Premium adds security features such as Intune device management, Conditional Access and Microsoft Defender for Business. We can mix plans so each person has what they need.
Do I need a separate backup for Microsoft 365?
We recommend it. Microsoft protects the service itself, but deleted or overwritten items are only kept for a limited period and ransomware or a mistake can affect your data. An independent backup lets us restore mailboxes, files and Teams data from a specific point in time.
How long does a migration to Microsoft 365 take?
It depends on the number of users and how much data you have. For a typical small business the planning and move take from a few days to a couple of weeks, with the final switch-over usually done in the evening or at a weekend.
Can you migrate us from Google Workspace?
Yes. We move email, calendars, contacts and files from Google Workspace into Exchange Online, OneDrive and SharePoint, and help staff get used to the new apps.
Can you take over support of our existing Microsoft 365 tenant?
Yes. With your permission we are given delegated admin access to your tenant, review how it is set up, and fix anything urgent before taking over day-to-day support.
Will email be down during the move?
We plan the switch-over so mail keeps flowing. There may be a short window while DNS changes take effect, which is why we schedule it outside working hours and check everything afterwards.
Does Microsoft 365 make us Cyber Essentials compliant?
Not on its own. A well-configured tenant covers important controls such as multi-factor authentication and admin account separation, but Cyber Essentials also covers your devices, firewalls, software updates and malware protection.