Microsoft 365 Integration · Plymouth
Microsoft 365 Integration in Plymouth
Connecting a Plymouth organisation's own software to Microsoft 365 — mail, calendars, files, Teams. Almost all of it runs through Microsoft Graph, and the decision that matters most is permissions: application permissions grant access to every mailbox in the tenant, which is rarely what anyone intends.
Why this comes up
The problem
Your application needs to read calendars, send from company addresses or store documents in SharePoint, and the permission model is unfamiliar territory.
What you get
What we deliver
- Graph permissions scoped to the minimum, with delegated preferred over application
- App registration configured properly in Entra ID, with consent understood
- Calendar, mail or file access implemented against the correct Graph endpoints
- Change notifications subscribed to rather than polling, with renewal handled
- Throttling handled, since Graph will rate-limit and expects backoff
- Documentation of what the app can reach, which auditors will ask for
Want this scoped for your business in Plymouth?
Thirty minutes, no charge, no sales script. You leave with a written summary of what microsoft 365 integration would actually involve — whether or not you use us.
Working in Plymouth
South West
Plymouth has the largest naval base in Western Europe, and the defence supply chain around it brings security clearance and accreditation requirements that shape what a supplier can realistically bid for.
Marine and defence supply chain systems where security accreditation is a precondition rather than a differentiator.
Sectors we work with in Plymouth
- Marine & Defence
- Manufacturing
- Healthcare
- Higher Education
- Tourism
What we work with
Technologies and platforms
- Microsoft Graph
- Entra ID
- TypeScript
- Azure
- OAuth 2.0
Who we work with
Industries we serve
- Professional services
- Financial services
- Education
- Healthcare
- Public sector
Why us
Why Plymouth businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in Plymouth
Looking for the full picture? See our Microsoft 365 Integration services, everything we do in Plymouth or browse everything we do.
Microsoft 365 Integration in Plymouth — common questions
- What is the difference between delegated and application permissions?
- Delegated acts as the signed-in user and sees only what they can see. Application permissions act as the app itself and typically reach the whole tenant — every mailbox, every file. Use delegated wherever the work happens on a user's behalf.
- Can we restrict application permissions to certain mailboxes?
- Yes, and you generally should. Application access policies limit an app to a specified group rather than the whole organisation. Without one, an integration for a single team can read the chief executive's mail, which is difficult to defend in review.
- How should we detect changes?
- Graph change notifications rather than polling — faster and far less load. Subscriptions expire and must be renewed on schedule, and a renewal that fails silently is the common cause of an integration that quietly stops noticing anything.
- Why do requests start failing under load?
- Graph throttles, returning 429 with a retry-after header. It is expected behaviour rather than a fault, and integrations that ignore backoff make it worse by retrying immediately into the limit they just hit.
- Do you work with businesses across Devon?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout South West, including Plymouth and the surrounding Devon area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of Plymouth businesses do you usually work with?
- Marine and defence supply chain systems where security accreditation is a precondition rather than a differentiator. Beyond that we work across Marine & Defence, Manufacturing, Healthcare, Higher Education and Tourism.
- Do you cover the areas around Plymouth?
- Yes — we work throughout South West, including Exeter, Truro, Bristol. Plymouth is an urban area of roughly 260,000+, and we take on work across the wider Devon region rather than the city boundary alone.
Talk to us about Microsoft 365 Integration in Plymouth
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise