To deliver this transformation, Amsterdam's library partnered with Greenberry, a Dutch digital agency, for the design and development of the new platform. As part of the replatforming process, Greenberry and OBA selected Prepr as the CMS, following a competitive pitch process where Prepr was chosen over other headless solutions.
Prepr was ultimately selected for its feature set, which aligned directly with OBA’s digital goals. Most importantly, Prepr stood out for its native personalization capabilities, which allow content to be dynamically adapted to different user segments based on behavior, source (like UTM tags), or data from an external identity platform such as a member login.
With Prepr at the heart of the platform, the team built a completely new architecture using Next.js on the frontend and Prepr as the headless CMS. This headless setup gave OBA full flexibility over the presentation layer, while allowing content teams to manage information and media efficiently.
Several core Prepr features were instrumental in supporting the build:
- Role-based access control (RBAC) allowed for the creation of custom user roles, ensuring that different teams could manage content securely and efficiently.
- The CMS supported a live preview environment (Visual editor), enabling editors to visualize how content would appear before publishing.
- Through structured content modeling, editors could create templates and reuse content blocks across the site, reducing duplication and speeding up workflows.
- Prepr enabled tagging and segmentation, helping the team prepare for future personalization strategies.
- Support for multilingual content was built directly into the schema, critical for a public institution in a diverse city like Amsterdam.
- The CMS easily integrates with external systems like Frontify for asset management and Typeform for forms, all through Prepr’s API and remote content source functionality.
- Content migration from the previous system was also streamlined using Prepr’s API capabilities, allowing for the automated transfer of large volumes of content items.

The new setup was built to be modular, scalable, and future-ready, enabling OBA to keep evolving without needing to reinvent its platform again.