Microsoft 365 Certified Solutions

Powerful Microsoft Excel Add-in

Enhance your workflow with enterprise-grade add-ins. We build bespoke tools that turn complex tasks into one-click solutions.

Excel
Word
Outlook
PowerPoint
Power Automate

Featured Services

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Authentication & Identity

Secure and scalable authentication services including SSO, OAuth, MFA, and role-based access control for web and enterprise applications.

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Excel Add-ins Development icon

Excel Add-ins Development

Custom Excel add-ins built with Office.js to automate workflows and boost productivity.

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Word Add-ins Development

Enhance Microsoft Word with custom add-ins for document automation.

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Outlook Add-ins Development

Streamline email workflows with custom Outlook add-ins.

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How we build for Microsoft 365

A structured, compliant, and performance-focused development lifecycle aligned with Microsoft AppSource standards.

STEP 01

Planning & Analysis

Gathering stakeholder requirements and defining scope against Office JS API capabilities.

STEP 02

Architectural Design

Designing Task Pane interfaces using Fluent UI components for a native Microsoft experience.

STEP 03

Development

Iterative coding of manifests and web logic with real-time Office sideloading tests.

STEP 04

QA & Security

Rigorous bug identification and validation against Microsoft security standards.

STEP 05

Deployment

Global rollout via AppSource or centralized tenant deployment via M365 Admin Center.

STEP 06

Maintenance

Ongoing monitoring and compatibility updates for new Microsoft 365 releases.

Frequently asked questions

Do you build VSTO and Office.js add‑ins?
Yes. I build modern Office.js add‑ins and maintain/extend legacy VSTO/COM solutions, including migration paths to ensure your tools stay current.
Can you integrate Microsoft Graph and webhooks?
Absolutely—OAuth, SSO, Graph data, subscriptions/webhooks, and backend services are common parts of my projects.
How do deployments work?
I support centralized deployment to your tenant and AppSource submissions, with full CI/CD, validation, and documentation.

Contact us

Have a project in mind? We're here to help.

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Email

info@msofficeaddin.com

Response within 24 hours

Consultation

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Global Support

Working with clients across North America, Europe, and Asia.