Swiss Government Health Care System migrates CRM and ERP into Web

Transforming a highly complex and proven legacy application into the web is very risky. With the help of Build.One and its partners a nearly impossible project became feasible - at significant lower cost and in much less time.
> 1,000
Designed screen masks
~ 1,300
Daily active users
Faster Time-to-Market

Transforming Core Systems

  • The Swiss Government Healthcare IT provider Open System IV (OSIV) selected Build.One along with its partners to enable its ambitious IT transformation goals.
  • OSIV needed to break-up its densly integrated ERP- and CRM-monolith to transform into a modern web application. Its sophisticated business logic and user experience was built over 20 years, totalling 120 development years.
  • With the help of the Build.One platform, OSIV is transforming its ~1,300 agents and over 1,000 screen masks into the cloud. An achievement originally considered nearly impossible, given the complexity, requirements and risk of the project.
Stefan Geyer
CEO OSIV Switzerland
We have very demanding requirements, that conventional tools could not transfer into web. Build.One enabled us to modernize our complex application in no time. Our existing development team could perform this transformation without the need to learn HTML, JavaScript or CSS. With Build.One, we have a future-proof technology and remain up-to-date permanently.


  • The OSIV application, part of the Swiss Government Healthcare System, is the central case management system for Swiss disability insurance. More than 1,350 employees across Switzerland use it to manage and process over than 25 million documents.
  • The system is part of the country's critical infrastructure and has to remain operational permanently.
  • Its built-in business logic is quite sophisticated and enjoys high user acceptance. However, its user interface and parts of the user experience have become outdated. Upcoming eGovernance regulation and modernization requirements made a transformation into a browser-based solution inevitable.
  • However, due to the complexity of the task and the risk of the project, finding a team and technology to support this transformation proved to be difficult. Two years and two costly proof of concepts did not yield a promising solution.
  • Technology partner Progress suggested a proof of concept with the Build.One platform, that demonstrated both, technological feasibility and rapid realization at significantly lower cost.

Current Situation

Complexity: >1,000 screens from Windows application to be transferred into web
User Experience: Complex User Experience with Multi-Windowing and Multi-Tasking, critical for team performance
Security: Very high security level with Government data and/or personal medical records
Capabilities: Strong developer team, but limited web knowhow
User requirements: Current system with high acceptance rate
Budget: Fixed budget
Time constraints: Development, roll-out and training in parallel to running legacy system


Bring core system into web, while maintaining business logic and functionality
Make system future-proof
Enable Mobile & Home-Office
Implement eGovernment regulation
Reduce operating and maintenance effort
Reduce training effort
Realize user-centric design

Why OSIV selected Build.One

Capability to transform complex application into web
Become Future-proof, while frontend remains up-to-date automatically
Rapidly speed-up development and become agile
Highly customizable user experience
Co-creation across developers, product owners and users


  • The project is highly complex and involved changes on a technical, organizational and methodological level. To minimize risk, the new solution would be introduced in parallel operation in stages with both, old and new, versions having access to the same database. This enabled the team to continue working seamlessly with the old solution, without any data loss in case of problems.
  • A pool of partners in joint-collaboration with OSIV to build the application within Build.One, regulated the revision of the architecture, and handled user training. The third generation of OISV web application was developed within four years and gradually rolled out to all seven IT offices in parallel to the client-server application that was still in use.

Application overview

CRM for millions of customer records

ERP and task handling of all aspects in insurance process
  • Invoice control
  • Case evaluation
  • Integration support
  • Legal services
  • Documents handling
  • Automations of scanning, emailing and printing
  • Input & output management, internally paperless
  • Data integration and exchange with third-party software
Integration of all operations across 12 locations into one central application



Long-term Build.One technology & business partner Progress delivers OSIV infrastructure and governs the transformation project.


Long-term integration partner Wayfare delivers seminal parts of the application development in dense collaboration with the OSIV team.


Long-term consulting partner Consultingwerk providing the smart component library that simplifies integration and flexibility.


  • Secured operability during the multi-year transformation process and ensured a solution that is future-proof by definition. Most important however was that OSIV could re-use its proven business logic, processes and code-base.
  • Enabled both on-premises and cloud operation with full security features and delivered project while remaining completely online.
  • With an application that is highly collaborative and agile, OSIV now continues to further develop the solution and ensures staying up-to-date with the ever changing regulatory and business requirements.


Running new and old application on same database during step-by-step migration

Continuous co-creation of developers, architects and business owners

Native Windows GUI functionality and usability in browser application
  • Multi-Tasking
  • Multi-Windowing
  • Drag&Drop across windows
  • User and user group customization
Fulfilling eGovernance regulation, such as remote work, mobile and home office

Transparent controlling of security and auditing requirements
Explore Use CasesRequest Demo