Robinson focuses on e-commerce, media, and software sites, where pages can both represent a business and drive product growth. Customers expect sites to load quickly around the world, stay available, and personalize content to their needs.
Building High-Performance Marketing Websites
Speaker
Lee Robinson, director of developer relations at Vercel, discusses building high-performance marketing websites at React Miami.
Developers need fast release cycles, tools for team experiments, and tooling that helps avoid performance mistakes. Robinson points to common problems such as sites served from a single region, slow builds, and client-side A/B tests that cause layout shifts.
Robinson explains Core Web Vitals as measures of loading speed (LCP), interaction responsiveness (FID), and layout stability (CLS). He recommends tracking these field metrics over time and using lab tools such as Lighthouse before release.
A CMS-driven banner or personalized call to action can be served statically, rendered on the server, or streamed as data arrives. Static pages load quickly but may require a deployment for content changes; server rendering can wait on the CMS. Robinson describes streaming and targeted edge-cache invalidation as ways to deliver changing content sooner.
Robinson recommends making product and marketing pages feel like one experience. On Vercel's homepage, logged-in users can see recently pushed repositories and import one, while logged-out users see options to connect a Git provider or start from a template.
Takeaways
- Track Core Web Vitals in production and use lab measurements before release.
- Serve assets close to visitors to reduce request latency.
- Run experiments without shifting page layout.
- Match the rendering and cache strategy to how often content changes.
- Speed up local development, review, and deployment so teams can iterate sooner.
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What was claimed 9
- built
“We're also the creators of Next.js, a React framework.”
YouTube Verified10 sources· Talk, GitHub, Web· archived
- role atLee Robinson is Head of Developer Experience at
Vercel
“the things that have worked for me in the past four and a half years at Vercel”
0:00inDeveloper Experience (Japan Meetup 2025)YouTube Verified3 sources· Talk
- featureCore Web Vitals: Measures loading speed, responsiveness, and layout stability
“There are three that we're going to talk about today.”
YouTube Unverified1 source· Talk
- metricCore Web Vitals: Three metrics discussed: LCP, FID, and CLS
“These are the three Core Web Vitals: LCP, FID, and CLS.”
YouTube Unverified1 source· Talk
- featureVercel Analytics: Tracks Core Web Vitals over time and across deployments
“It lets you track your Core Web Vitals over time ... You can track it across deployments.”
YouTube Unverified1 source· Talk
- feature
Next.js: Middleware can run A/B tests and experiments without introducing client-side layout shift
“Middleware that lets us run A/B tests and experiments without introducing client-side layout shift.”
YouTube Unverified1 source· Talk
- integrates withConformance integrates with
Next.js
“We're using Next.js ... what we're calling Conformance, a built-in ESLint integration.”
YouTube Unverified1 source· Talk
- feature
Next.js: Image, script, and web font optimizations
“We have an image component, a script component, and web font optimization.”
YouTube Unverified1 source· Talk
- feature
Google Search: Core Web Vitals affect website ranking“Core Web Vitals affect your ranking in Google Search.”
YouTube Unverified1 source· Talk
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