Cloud Foundry Summit 2026

Replacing a core dependency in Cloud Foundry sounds straightforward, until you realize it sits at the center of app pushes, staging, and blobstore operations.

For years, Cloud Controller relied on the fog libraries to interact with blobstores. And like real fog, it worked until clarity mattered. Beneath the surface, it had become a liability: unmaintained dependencies, custom forks, and end-of-life SDKs blocking upgrades. What looked stable was becoming fragile.

Attempts to replace it led nowhere, until a casual conversation after CF Day North America 2025 sparked a new idea: what if we took inspiration from how BOSH handles blobstores? The answer wasn’t another library, but a different approach.

That idea evolved through community collaboration, from a proof of concept to an RFC and ultimately storage-cli, enabling a safe migration path.

In this talk, we share what it took to make that shift in production, what changed in performance and stability.

Attendees will learn how working groups and the community can collaborate to replace deeply embedded dependencies and turn shared ideas into production-safe solutions.

We didn't just replace fog. We cleared it.