Vercel Sandbox vs EU Data Residency: Why Agent Code Location Matters for Compliance

A Vercel Sandbox alternative that runs in the EU

Vercel Sandbox runs every agent sandbox exclusively in the iad1 (US East, Northern Virginia) region with no EU option available. orkestr offers EU-hosted sandboxes on every plan by default, with hardware isolation identical to Vercel’s Firecracker microVMs.

Why This Matters

The physical location of agent code execution determines data residency compliance, a hard legal requirement under GDPR and national laws, not a performance tuning knob. Vercel Sandbox’s single US region subjects all agent files and snapshots to the US CLOUD Act, even when the company selling the service is a US entity (Vercel Inc.). For EU companies, this creates a mandatory data transfer conversation under Standard Contractual Clauses that an EU-hosted alternative removes entirely, without sacrificing isolation quality or developer experience.

Key Insights

• Vercel Sandbox runs exclusively in iad1 (US East), with no EU region available today, forcing all agent code and snapshots under US jurisdiction (orkestr comparison, 2026).
• Both Vercel and orkestr use hardware-isolated microVMs with dedicated kernels for sandbox isolation — not shared-kernel containers — making the security boundary identical between the two (2026).
• Vercel Sandbox allows up to 2,000 concurrent sandboxes on Pro and 5-hour max runtime, while orkestr caps at 15 on Team (higher on request) with configurable timeouts (2026).
• orkestr defaults to network-off per sandbox (opt-in), contrasting with Vercel’s internet-on default; this protects against un-audited LLM-generated commands making unintended egress (2026).
• Neither platform runs the model — only the sandbox. The model call’s data location depends on the LLM provider chosen (e.g., Mistral for EU loop), orthogonal to sandbox region (2026).

Working Examples

Creates a sandbox from a Python 3.12 template, writes a file, executes it, and prints the result. The API shape mirrors Vercel Sandbox’s lifecycle but runs on EU hardware by default.

from orkestr import Sandbox
with Sandbox.create(template="python-3.12") as sbx:
    sbx.files.write("/workspace/main.py", "print(sum(range(1_000_000)))")
    result = sbx.exec("python /workspace/main.py")
    print(result.stdout)  # 499999500000

Practical Applications

• Use case: EU company building an AI coding agent that runs user-uploaded scripts in isolation — orkestr keeps execution in Falkenstein or Helsinki, aligning with GDPR data localization requirements. Pitfall: Assuming compliance requires a signed DPA alone while ignoring that US-hosted sandbox data is reachable under the CLOUD Act, creating a transfer gap that procurement documents may flag.
• Use case: Security-sensitive workload like running untrusted LLM-generated code — orkestr’s default-closed network prevents a hallucinated curl evil.example.com from leaking data. Pitfall: Using internet-on defaults (Vercel style) without firewall rules, allowing an un-audited agent to reach arbitrary external services before the policy is locked down.
• Use case: Multi-region agent that must coordinate with a US-based model API — orkestr’s EU sandbox adds a transatlantic hop to agent execution but keeps working files on EU soil. Pitfall: Choosing Vercel Sandbox solely for lower latency without evaluating whether the US jurisdiction of code storage conflicts with customer contracts or industry regulations.

References:

• https://dev.to/ianqqu/a-vercel-sandbox-alternative-that-runs-in-the-eu-30h4