Vercel vs Netlify vs Cloudflare vs AWS Amplify: Which Platform Should You Migrate To?

Why Hosting Matters More During a Migration Than a New Build

Most comparisons of Vercel, Netlify, Cloudflare, and AWS Amplify are written for a different question than the one you’re asking. They assume you’re starting a new project from a blank repository, where the worst-case outcome of a wrong platform choice is some wasted setup time.

That is not your situation. If you’re replatforming an existing site, a hosting decision made badly can cost you organic rankings you’ve spent years building, break URLs your customers and backlinks depend on, and create a risky cutover weekend with no safe way back. The question isn’t just “which platform is fastest” — it’s “which platform lets us move without losing what we already have.”

Three risks matter specifically during a migration that don’t apply to a greenfield build:

• Redirect handling — hundreds or thousands of old URLs need to map cleanly to new ones, or rankings drop.
• Rollback safety — if something breaks after cutover, how fast can you revert without a second outage?
• Dual-running cost — most migrations run old and new infrastructure in parallel for weeks, which changes the cost math entirely.

This guide compares all four platforms against those criteria specifically, alongside the standard developer-experience and cost questions — and includes what we’ve learned delivering 20+ real Next.js and Sanity migrations, not simulated benchmarks.

The Four Platforms, Equal Depth

Here’s the one-line version before we go deep on each.

Vercel

Vercel is built by the company that builds Next.js, so new framework features — App Router, Server Actions, Incremental Static Regeneration, Partial Prerendering — reach production with effectively zero configuration. For a migration, this matters because your team isn’t debugging platform compatibility issues while also trying to hit a cutover date.

Netlify

Netlify’s developer experience is close to Vercel’s, with mature built-in tooling — forms, identity, split testing — that predates most of Vercel’s equivalents. Its Next.js support is solid but consistently one step behind Vercel’s own platform on new App Router features, since Netlify is optimizing for many frameworks rather than one.

Cloudflare (Pages + Workers)

Cloudflare’s Workers run on V8 isolates rather than containers, which gives it a genuinely different performance profile: lower cold-start overhead and a much larger, denser edge network. Running Next.js on Cloudflare typically requires an adapter layer (most commonly OpenNext) rather than native zero-config support, so setup takes longer than Vercel.

AWS Amplify

Amplify Hosting has improved significantly, but full support for Next.js’s newer rendering modes (ISR, streaming, Server Actions) still often means reaching for OpenNext or a custom SST/Lambda setup rather than a managed zero-config path. What you gain is complete control over networking, compliance boundaries, and integration with existing AWS services — which matters if you’re already running production workloads there.

Which Platform Makes SEO-Safe Redirects Easiest?

Short answer: it depends less on the platform and more on where your redirect logic lives — but some platforms make the safe pattern much easier to reach.

Every platform can technically serve a 301 redirect. The real difference during a migration is who owns the redirect map and how easy it is to change without a deploy.

• Vercel supports redirects natively in vercel.json or Next.js config, and edge middleware can handle dynamic redirect logic without a full redeploy.
• Netlify has a mature _redirects file convention that’s simple for static rule sets but less suited to large, content-driven redirect maps that change often.
• Cloudflare can handle redirects at the Workers layer with very low latency, which is a genuine advantage for very large redirect tables (tens of thousands of URLs).
• AWS Amplify typically routes redirects through CloudFront behavior rules or Lambda@Edge, which works but adds more moving parts to change safely.

The bigger risk isn’t the platform — it’s hardcoding redirects into a config file that only developers can touch. In our own migration framework, we store the redirect map as a content type inside the CMS itself, so marketing owns 301s without needing a developer or a deploy. That pattern is portable across any of the four platforms above; the platform choice affects how fast redirects propagate, not whether the pattern is possible.

Compute Model and Performance: What’s Actually Measured vs. Estimated

It’s worth naming something plainly: a lot of the “benchmark” content comparing these platforms uses simulated or illustrative numbers rather than real production measurements, and readers can’t always tell the difference from the table alone. We’d rather tell you what we actually know versus what’s a reasonable but unverified industry assumption.

What’s well-documented and verifiable directly from each vendor:

• Cloudflare Workers execute in V8 isolates that share a process, which structurally avoids the container cold-start penalty that traditional serverless functions carry.
• Vercel’s Fluid Compute model runs standard Node.js processes and bills for active CPU time rather than wall-clock time, which tends to favor I/O-heavy applications like content sites waiting on CMS queries.
• AWS Lambda-based functions (used under Amplify and Netlify Functions) carry a cold-start profile shaped by runtime, package size, and provisioned concurrency settings — highly variable by configuration, not a fixed number.

What we won’t do is hand you a table of precise millisecond figures presented as fact when they’re really rough industry ranges. If exact latency numbers matter for your decision, the right move is a load test against your actual application, not a generic comparison chart — and it’s one of the things we run as part of a Migration Readiness Assessment before recommending a platform.

Cost at Three Real Migration Scales

Cost comparisons that only look at steady-state traffic miss the actual budgeting problem: most migrations run both the old and new infrastructure in parallel for two to six weeks, so the real question is total cost through cutover, not just the eventual monthly bill.

A pattern we’ve seen consistently across 20+ migrations: teams that assume “Vercel is expensive” are usually looking at a bill inflated by an undesigned cache, not an inherent platform cost. Functions re-running on every request, or image optimization applied to assets that don’t need it, will make any platform’s bill look worse than it needs to be.

Only at genuinely high-bandwidth, high-media-volume scale does the cost gap between platforms become large enough to be the deciding factor on its own.

Platform Fit for Sanity CMS and Headless Architecture

This is the question almost no comparison of these four platforms addresses, and it’s often the one that matters most for a content-heavy migration.

• Vercel + Sanity is the most common and best-documented pairing: Sanity’s live preview and draft mode integrate directly with Next.js’s preview mode, and webhook-triggered revalidation (revalidateTag/revalidatePath) works natively.
• Netlify + Sanity works well for the same webhook-triggered rebuild pattern, though on-demand ISR-style revalidation is less mature than Vercel’s native support.
• Cloudflare + Sanity requires routing Sanity’s webhooks through a Worker to trigger cache invalidation, since Cloudflare’s caching model doesn’t map onto Next.js’s ISR primitives the same way — workable, but it’s extra plumbing your team needs to build and maintain.
• AWS Amplify + Sanity is the least out-of-the-box of the four; webhook-triggered revalidation typically needs a Lambda function acting as the glue between Sanity and your CDN invalidation.

If your content team needs live preview and instant publish-to-live turnaround, Vercel currently removes the most integration work. If bandwidth economics or existing AWS infrastructure outweigh that convenience, the other three are workable — they just require your team to build and own more of the plumbing yourselves.

Lock-In: How Hard Is It to Leave Each Platform Later?

Every platform creates some degree of lock-in the moment you adopt its platform-specific features. The difference is how much and where it lives.

• Vercel: code-level lock-in is low if you stick to standard Next.js APIs; it grows quickly if you adopt Vercel-specific features like Edge Config, Blob storage, or Firewall rules directly in application code.
• Netlify: similar profile to Vercel — low lock-in for standard framework code, higher for Netlify-specific Functions and Identity.
• Cloudflare: going deep on Workers-specific APIs, D1, KV, and Durable Objects raises switching cost meaningfully, since these have no direct equivalent elsewhere.
• AWS Amplify: lock-in depends heavily on whether you provision through Amplify’s managed layer (higher lock-in) or through your own Terraform/CDK definitions calling standard AWS services (lower, more portable).

The practical fix, regardless of platform: keep platform-specific integrations behind a thin adapter layer rather than scattered through business logic. That one habit is what keeps a future migration a re-point instead of a rewrite.

Decision Framework for a Replatforming Project

Use this in order — the first “yes” is usually your answer.

• Is a fast, low-risk cutover the top priority, and are you already on or moving to Next.js? → Vercel. Zero-config feature parity minimizes the number of new variables during a migration window.
• Is your content-heavy site’s bandwidth/media delivery the dominant cost driver, or do you need very large-scale redirect handling at the edge? → Cloudflare.
• Do you have existing AWS infrastructure, in-VPC requirements, or compliance obligations that require staying inside AWS? → AWS Amplify.
• Are you migrating from a non-Next.js Jamstack stack, or is your team already deep in Netlify’s built-in tooling? → Netlify.
• None of the above clearly dominates? → A hybrid is common and workable: core application on Vercel, high-volume media served from Cloudflare R2 or AWS S3 behind a CDN.

Case Study: What We Learned Migrating GPNotebook

GPNotebook — a healthcare publishing platform with 100,000+ pages and 1M+ monthly users — needed to move onto Next.js and Sanity without losing the organic visibility built over years of publishing.

The migration held to three non-negotiables: zero SEO ranking drops, a complete and verified redirect map, and a phased rollout rather than a single high-risk cutover. The result was roughly a 70% performance improvement post-migration, with rankings fully preserved.

The platform choice mattered here, but it wasn’t the deciding factor on its own — the redirect strategy and staged rollout were. That’s consistent with what we’ve seen across 20+ migrations: the platform sets the ceiling on what’s possible, but the migration process determines whether you actually get there safely.

Not sure which platform fits your migration? Get a Migration Readiness Assessment.

We’ll audit your current stack, map your redirect risk, and give you a platform recommendation grounded in your actual traffic and content — not a generic decision tree. No commitment, no sales pitch disguised as a “free consultation.”

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