> For the complete documentation index, see [llms.txt](https://resources.unizin.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://resources.unizin.org/products/content/unizin-engage/release-notes/backend-modernization-update.md).
# Backend Modernization Update
## Backend Modernization Update
| Version | 2.28.1 |
| ------------ | ---------- |
| Release Date | 2026-04-21 |
## Key features
* Upgraded backend code versioning
* Upgraded Launcher for improved testing and development
* Removed Search feature and “Upload Materials” button from Engage home page
**Details**
* Engage’s backend code and Launcher were outdated, these have now been upgraded and modernized.
* Originally, in the Engage home page, the “Search” feature could look through a student’s notes, as well as text in a book, and the “Upload Materials” button would allow an instructor to add their own files to their bookshelf. The integration with the RedShelf eReader however removed these functionalities. We are removing both the search bar and the “Upload Materials” button from the home page to avoid any confusion.
## Known Issues
None.
---
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