Khoury College of Computer Sciences
CS 4550 / CS 5610 · Web Development · Fall 2026
Vercel Fluid: one compute layer for functions, sandboxes, and builds
- Next.js
- AI
- Course
Instructor-curated digest, not original reporting. Optional further reading — not required for grades.
On September 1, 2026, Luke Phillips-Sheard published Compute that takes any shape on the Vercel blog. Fluid is Vercel's unified compute layer: it assembles the machine a workload needs, swaps configuration on the fly, and absorbs burst capacity. Builds ran on it first, then sandboxes, and now functions; the post says if you have shipped on Vercel you have already been on Fluid.
The post cites more than 15 million builds a day, 25 million sandboxes a week, and a trillion requests a month. Building blocks include Hive, which provisions isolated machines; Fluid images and VHS snapshots, which resume custom environments rather than cold-booting; and Vercel Drives, portable storage that outlives the machine (sandboxes today, private beta). Many requests share one instance, and Active CPU pricing means you pay for CPU while code runs, not while waiting on a database or model. The write-up is framed for agents that need fast, isolated machines with their own environment and state that outlives compute.
Optional further reading for CS 4550 / CS 5610 — not required for labs or grades. This course site already ships on Vercel; the digest is about how platform compute is assembled, not a change to App Router lab code. Follow the original Vercel post for architecture and pricing details.