Case study · Enterprise
Modernising 140+ SharePoint Applications from SharePoint 2016 to Microsoft 365
Large-scale transformation from legacy InfoPath solutions to modern Power Platform.
By Spreeze team · Published
- Applications modernised
- 140+
- Target platform
- SharePoint Online
- Data loss
- Zero
Overview
Spreeze led a large-scale modernisation programme to transition a complex estate of 140+ SharePoint 2016 applications, many built using InfoPath, to SharePoint Online and the Power Platform.
This strategic transformation eliminated technical debt, improved user experience, and positioned the organisation for long-term success on Microsoft 365 while addressing the critical SharePoint 2016 end-of-life deadline.
The challenge
The organisation faced a critical technology inflection point with SharePoint 2016 reaching end of life and InfoPath deprecated.
- SharePoint 2016 nearing end of mainstream support with growing maintenance challenges
- Heavy reliance on InfoPath, now deprecated with no Microsoft support
- Increasing security and compliance risks from outdated on-premises infrastructure
- Limited mobile support and poor user experience on legacy systems
- High operational overhead maintaining legacy infrastructure and custom code
- No supported long-term path forward on-premises
- Remaining on SharePoint 2016 was no longer viable from a risk and support perspective
What we did
Spreeze executed a structured transformation approach, methodically migrating each application to SharePoint Online and Power Platform.
- Full application inventory and technical assessment to understand dependencies
- Redevelopment on SharePoint Online with modern lists and document libraries
- Rebuilding InfoPath forms using Power Apps with responsive design
- Workflow automation using Power Automate for approval processes
- Modern UX aligned with Microsoft Fluent design system
- Improved access control and governance using Microsoft Entra ID
- Migration executed with minimal business disruption through phased rollout
Outcomes
The modernisation delivered measurable business value and positioned the organisation for future innovation.
- Successful migration of 140+ applications to modern platform
- Full retirement of InfoPath solutions and technical debt
- Reduced technical debt and simplified support model
- Improved performance and mobile access for all users
- Long-term supportability beyond SharePoint 2016 EOL
- Alignment with Microsoft 365 roadmap and innovations
- Enhanced security posture and compliance readiness
Technologies
SharePoint Online · Power Apps · Power Automate · Microsoft Entra ID · Microsoft 365 compliance