Microsoft 365 Tenant Setup for UK Businesses
EJK Consultancy helps UK businesses set up new Microsoft 365 tenants, and rebuild ones that were created quickly and never properly finished. That covers domains, Exchange Online, Entra ID, Conditional Access, SharePoint and Teams.
A Microsoft 365 tenant is easy to create and easy to create badly. The default wizard gets people signed in. It does not give you mail flow that matches how invoices are sent, a SharePoint structure anyone can find, or Conditional Access that will survive the first week of real use.
The same checklist applies to a new tenant and to one that grew without a design: identity first, then Exchange Online, then sharing and Teams, then the details people only notice when they break.
Moving email or files as part of the build? See Exchange migrations, SharePoint migration or a tenant assessment if the current environment needs reviewing first.
What a Tenant Build Includes
Fixed-scope where the requirements are clear. Discovery first if you are migrating from Exchange, Google Workspace or another tenant.
Identity and Domains
Primary domain, UPNs that match email, Entra ID settings, admin roles and break-glass accounts before Conditional Access is switched on.
Exchange Online
Accepted domains, connectors, shared mailboxes, mail flow to scanners and applications, plus SPF, DKIM and DMARC.
Security Baseline
MFA, Conditional Access, guest access and external sharing, documented so it can be supported afterwards.
SharePoint and OneDrive
A site structure people can find, with owners, naming and sharing rules, rather than a dump of last year’s file server into a single library.
Teams Structure
Naming, owners, privacy and a sensible number of Teams, so the tenant does not fill with unused teams in the first month.
Admin Handover
A written baseline, named owners and a walkthrough so the setup does not drift the week after go-live.
Typical Starting Points
New companies, rebuilds, and tenants that were never properly finished.
Tenant Setup Approach
A structured build so the tenant is ready for real work, not just a successful sign-in.
Discovery
Domains, licences, identity source, mail dependencies and how staff actually work.
Design
Identity, Exchange Online, sharing, Teams and the security baseline, written down before configuration starts.
Build
Configure the tenant, then test mail flow, MFA and a small set of real users before go-live.
Handover
Admin walkthrough, named owners and a baseline document so the setup does not drift.
Frequently Asked Questions
Common questions about Microsoft 365 tenant setup.
If you need a new Microsoft 365 tenant, or a rebuild of an existing one, start with a conversation.
We will set out identity, Exchange Online, security and collaboration before configuration starts.