Open source runs the world. The frameworks, libraries, and tools we rely on are strengthened by communities that share ideas, review code, and build in the open. At Vercel, we want to help those communities thrive. That’s why we launched the Vercel Open Source Program: a developer initiative that gives maintainers the resources, credits, and support they need to ship faster and scale confidently. Four times a year, we’ll welcome a new cohort of projects into the program. Members receive $3,600 in Vercel credits, perks from partners, and a dedicated Slack space to learn from one another. Today we are announcing this spring's cohort.

Experimentation, A/B testing, and feature flags serve as essential tools for delivering better user experiences, ensuring smoother rollouts, and empowering teams to iterate quickly with confidence. We're making it easier to bring flags into your workflow with:

Building for the web goes beyond speed and aesthetics, discoverability matters just as much. While AI can accelerate web development, it often skips over performance, accessibility, or SEO best practices that matter for discoverability. With v0, you don’t have to compromise. Every interface you generate is fast, accessible, and SEO-optimized by default. v0 integrates with Next.js and deploys to Vercel, giving you structured metadata, performance tuning, and Server Side Rendering (SSR). The result is better Core Web Vitals, pages that load quickly and return full HTML, making them easier for search engines to crawl and index.

Yesterday, a federal court made a decisive ruling in Epic Games v. Apple: Apple violated a 2021 injunction by continuing to restrict developers from linking to external payment methods, and by imposing a 27% fee when they did. The ruling represents a major shift for native app developers.

The Vercel Web Application Firewall (WAF) inspects billions of requests every day to block application-layer threats, such as cross-site scripting, traversal, and application DDoS attacks. While we already inspect and block malicious bot traffic, we wanted to provide better, more precise controls to fine tune your application security. Today, we're launching the Bot Filter managed ruleset, free for all users on all plans. With a single click, you can protect your application from bot attacks.

In today's rapidly evolving tech landscape, AI has moved from research labs to everyday tools with stunning speed. I wanted to share my perspective, not only as a CTO at Vercel, but as an engineer who's seen a few revolutions over the past 30 years.

A Spanish court has granted LALIGA the power to block IP addresses associated with unauthorized football streaming—without distinguishing between infringing and non-infringing services. As a result, legitimate, unrelated websites that people depend on are now inaccessible in Spain.

Routing is a fundamental part of delivering applications, but it’s often treated as an afterthought—tacked onto the caching layer and configured through complex YAML or manual click-ops. This can introduce friction for teams, increase the risk of misconfigurations, and slow down deployments, especially as applications grow in complexity. Vercel takes a different approach: routing is built into the platform as an application-aware gateway that understands your codebase. This unlocks a range of capabilities that simplify development by reducing configuration overhead, minimizing latency, and enabling more advanced architectures. The gateway has full context of your deployments, domains, and logic. It supports standard routing and custom rules, but goes beyond reverse proxying by interpreting application logic in real time to make smarter decisions, like skipping unnecessary compute. Here’s how Vercel routes requests—and why it makes building performant, complex apps easier.

Grep is extremely fast code search. You can search over a million repositories for specific code snippets, files, or paths. Search results need to appear instantly without loading spinners. Originally built with Create React App (CRA) as a fully client-rendered Single-Page App (SPA), Grep was fast—but with CRA now deprecated, we wanted to update the codebase to make it even faster and easier to maintain going forward. Here's how we migrated Grep to Next.js—keeping the interactivity of a SPA, but with the performance improvements from React Server Components.

The AI SDK powers incredible applications across the web, and today we're announcing the Chat SDK—a best-in-class, production-ready template for building conversational AI applications like ChatGPT or Claude artifacts.

The Vercel Marketplace adds new integrations from Sentry, Checkly, and Dash0. You can now use the tools you already trust to monitor, measure, and debug your apps. No custom setup. No change to how you build or deploy. These tools connect directly through the Vercel Marketplace with integrated billing, single sign-on, and access to provider dashboards, giving you deep visibility without the setup overhead.

Securing web applications is core to the Vercel platform. It’s built into every request, every deployment, every layer of our infrastructure. Our always-on Denial-of-Service (DoS) mitigations have long run by default—silently blocking attacks before they ever reach your applications. Last year, we made those always-on mitigations visible with the release of the Vercel Firewall, which allows you to inspect traffic, apply custom rules, and understand how the platform defends your deployments. Now, we’re introducing Protectd, our next-generation real-time security engine. Running across all deployments, Protectd reduces mitigation times for novel DoS attacks by over tenfold, delivering faster, more adaptive protection against emerging threats. Let's take a closer look at how Protectd extends the Vercel Firewall by continuously mapping complex relationships between traffic attributes, analyzing, and learning from patterns to predict and block attacks.