Software Development for SaaS and Software Vendors

Microsoft 365 document editing, Office Add-Ins and integrations embedded inside your product.

SaaS companies and independent software vendors are our primary clients. They come to us when their roadmap demands deep Microsoft 365 integration — document editing inside their product, Office Add-Ins that connect their platform to Word, Excel and Outlook, or a migration to Microsoft's modern document APIs — and they stay because we work the way product teams work: co-sourced, sprint-aligned and focused on shipping.

Embed Microsoft 365 Inside Your Product

Letting your users view and edit Word, Excel and PowerPoint documents without leaving your application is one of the most requested SaaS features — and one of the hardest to build. We are one of very few teams worldwide with production experience across all three routes: SharePoint Embedded, the WOPI protocol and Cloud Storage Partner Program, and Microsoft Office Add-Ins. If you are weighing up the options, our guide for SaaS companies is the place to start.

Partner Programme Experience

Microsoft's partner programmes have real entry requirements: CSPP membership, validation testing, AppSource certification and manifest reviews. We have taken multiple vendors through these processes, so you avoid the false starts and rejected submissions that stretch integration projects from months into years.

Built for Multi-Tenant SaaS

Everything we ship is designed for the realities of SaaS: multi-tenant architectures, Microsoft Graph back-ends, usage-based cloud economics and zero-downtime releases. We regularly migrate vendors from custom WOPI hosts to SharePoint Embedded, and we co-source alongside in-house teams — your engineers keep the knowledge when the engagement ends.

SaaS Products We Have Shipped With

We built Word and Excel Add-Ins for AuditBoard and advised their team on Add-In best practice. For Kendox we implemented WOPI document editing, and for Workiro we combined WOPI with an Outlook Add-In and Microsoft Graph email sync. We embedded Office in Corcentric's PHP-based platform and built the mobile companion app for Slidebank.