fuastthe fuast blog
Small software, out loud.
Notes on the small cloud: what it is, why teams keep needing little apps, and how an AI can build them to a contract instead of a canvas.
ConceptWhat is a small cloud? And why your team keeps needing one
A small cloud runs the little apps that live between a spreadsheet and a real SaaS product. Here is what that means, and why the gap has stayed open for so long.
July 31, 2026
Small software: the apps between a spreadsheet and a SaaS
Small software is the little tool your team needs that is too big for a spreadsheet and too small to buy or build. Here is why it never ships, and what changes.
July 29, 2026
GuideCapsules, explained: one small full-stack app
A capsule is one small full-stack app on fuast. A server half, a client half, a tiny import surface. Here is the contract, why it is so strict, and a working sample.
July 24, 2026
OpinionWrite to a contract, not a canvas
Agent-native means an AI builds a real app from a sentence because the whole contract fits in one file. Here is why that beats a drag-drop canvas an AI cannot drive.
July 22, 2026
ConceptShare software like a doc: the missing primitive for team tools
Building an internal tool is half the job. Getting your team on it is the other half. Sharing software like a doc, a link plus verified sign-in, is the missing primitive.
July 18, 2026
TutorialBuild an expense-approval app in an afternoon
A start-to-finish walkthrough: the prompt you give your AI, the capsule it writes, an email to the approver, a daily digest, fuast deploy, and a link for your team.
July 15, 2026
GuideThe batteries a small app needs: auth, data, storage, cron, email
A small internal app needs auth, a database, file storage, cron, and email before it does anything useful. Standing each up yourself is the tax that kills small software.
July 10, 2026
EngineeringHow fuast runs little apps safely: V8 isolates
A shared cloud runs many teams' code side by side. fuast keeps them apart with V8 isolates, out-of-process, each app on its own subdomain origin. Here is the security story.
July 7, 2026
OpinionInternal tools without a platform team
Most teams cannot spare engineers to build internal tools, so the tools never get built. AI writes the app and a small cloud runs it, which removes the need for a platform team.
July 2, 2026
OpinionAI app builders make prototypes. Who runs the real thing?
Lovable, v0, and Bolt generate beautiful UI fast. But a prototype has no runtime, no auth, no data, and no way to share it. Here is the gap, and where the real app lives.
June 26, 2026