Microsoft Edge is thrilled to join Interop 2025, collaborating with major tech players to enhance web interoperability. This initiative addresses developers’ pain points and focuses on key areas like CSS anchor positioning and View Transitions. The project aims to ensure consistent web experiences across all browsers and devices.

Microsoft Edge Joins Forces for Interop 2025
Microsoft Edge is stepping up its game by participating in the fifth edition of the Interop project: Interop 2025. This collaboration includes tech giants like Apple, Google, and Mozilla. Together, they aim to enhance interoperability across the web platform.
What’s New in Interop 2025?
The Interop project focuses on ensuring that web code functions consistently across different browsers and devices. This year, the initiative will tackle various pain points identified by developers. As stated in the announcement,
“Your feedback was key in helping focus our efforts on the areas where we can make a positive impact.”
Major Updates from 2024
Interop 2024 made significant strides in several areas:
- Popover API: Fully supported across all browsers, allowing for easy content display.
- Declarative Shadow DOM: Improved implementation quality, making shadow roots easier to create.
- CSS Nesting: Shorter selectors and relaxed syntax now work uniformly across browsers.
- Accessible Names and Roles: Consistent computation enhances the experience for assistive technology users.
Focus Areas for 2025
Interop 2025 has an ambitious agenda. Key focus areas include:
- CSS Anchor Positioning: Position elements based on others.
- View Transitions: Create smooth animated transitions between document states.
- Navigation API: Simplify browser navigation actions for better user state management.
- Storage Access API: Remove third-party cookies while supporting user authentication.
Addressing Developer Concerns
Microsoft acknowledges ongoing frustrations regarding long-standing interoperability issues. The company is committed to improving transparency in the selection process for focus areas. A supplementary Top Developer Needs dashboard was launched to track progress on these issues.
As the Edge team stated,
“We will continue to lobby within the Interop group for increased transparency and an end to confidential vetoes.”This commitment reflects a dedication to fostering a better web experience for developers and users alike.
Stay Updated
For more details on the focus areas and to track the project’s progress, visit the Interop 2025 dashboard. The future of web interoperability looks promising, and your input continues to shape it!
From the Windows Blog