Step 1: Understand your licences and current use
Start by checking users, shared mailboxes, devices, domains, licence types, inactive accounts, guest access and the tools people actually use. This shows whether Microsoft 365 is being treated as a mailbox or managed as a business platform.
Step 2: Secure identities and administrator access
Identity is where many Microsoft 365 problems begin. Review administrator roles, emergency access, MFA, recovery details, leavers, guest users and risky sign-in patterns before making wider changes.
Step 3: Protect email against phishing and impersonation
Exchange Online can support safer email with checks around SPF, DKIM, DMARC, external sender identification, forwarding, mailbox rules, auditing and anti-phishing features where the licence and configuration support them.
Step 4: Govern Teams, SharePoint, OneDrive and guest access
File sharing needs structure. Teams, SharePoint and OneDrive should make collaboration easier without leaving sensitive documents exposed, duplicated or owned by the wrong person.
Step 5: Secure and manage business devices
Where appropriate and licensed, Microsoft 365 can help with device sign-in, compliance, app control and endpoint protection. The right setup depends on the devices, licence level and risk profile.
Step 6: Define backup, recovery and continuity
Retention, recycle bins and resilience are useful, but they are not the same as a documented backup and restore plan. Businesses should know what can be recovered, who can recover it and how recovery will be tested.
Step 7: Automate repetitive work
Once data and access are under control, Microsoft 365 can help reduce repetitive admin with workflows, approvals and reporting. Automation should keep human review where money, customers, security or reputation are involved.
Step 8: Prepare data and permissions before introducing Copilot
Copilot and AI tools are only as safe as the data and permissions behind them. Before switching them on, review sharing, labels, sensitive files, guest access and who can see what.