<!here> Please join us for Office Hours! Bring your GrowthBook and experimentation questions! Link above.

Hi <!everyone> As the GrowthBook project turns 3 this month 🎂, we’re pleased to announce GrowthBook 3.0! This release has a lot of huge new features: • Edge SDKs - This is a game-changer. We’ve developed SDKs that seamlessly integrate with your CDN Edge, allowing you to conduct experiments directly on edge workers. With dedicated SDKs for Cloudflare Workers, Lambda@Edge, Fastly Compute, and others, you can now run client-side tests (including visual editor tests, URL redirects, and feature flags) without any of the typical issues they have including ad blocks and flickering. How cool is that? You can let your team create visual experiments and run them without any of the flashing/flickering or performance impacts. Explore the documentation for Cloudflare, Fastly, Lambda, and other Edge platforms to see how easy it is to use. • Bayesian Priors and CUPED - We reworked our Bayesian statistics engine to support increased accuracy, support for priors, and CUPED variance reduction. You can read more about the Bayesian changes on our blog • Custom Roles - A long-awaited enterprise feature, you can now define custom roles with exactly what permissions they can or cannot have and then assign those roles to users or teams. This feature empowers you to tailor roles to your team's specific needs. View the Custom Role docs for more details. • OpenFeature Support - We’re excited to join the OpenFeature ecosystem with an official GrowthBook Provider! This initial release adds support for the Web and React SDKs, but we plan to add providers for all supported languages soon, so stay tuned! • Experiment Slack/Discord Alerts - We’ve added experiment warning alerts for when there are errors, or warnings with your experiments • JSON Feature Flag Editor - You can now define exactly what fields you want to pass with the feature flags and get a user friendly UI with full validation. • New Next.js Examples - We’ve updated our Next.js examples to include all the new rendering strategies available with the Next 14 App Router. We show how to use GrowthBook inside of React Server Components, how to integrate with the built-in fetch cache (with webhook revalidation), plus a powerful hybrid strategy that lets you do client-side feature flagging without any client-side network requests! Check out the new App Router examples, along with our updated Pages Router examples. • SDK Updates - The GrowthBook team and community have been hard at work creating and improving our SDKs. We’ve added a new React Native SDK, completely refreshed the Elixir, GoLang, and C# SDKs, and improved the Java, Python, Ruby, JS, React, Flutter, Swift, and Kotlin SDKs. You can read more details of this release on our new blog or on our GitHub.

Hi all! We've just released version 3.1, making GrowthBook easier to use, more powerful, and faster 🏎️ • Auto Fact Tables: Fact Tables are the new and preferred way to define metrics within GrowthBook, but creating them for all of your analytics events can be a tedious process. With Auto Fact Tables, GrowthBook can now auto-generate these for you with the click of a button! Once these fact tables are created, you can easily define a whole library of metrics on top of them without needing to write any SQL. • Impact Analysis: You can now view the cumulative impact of multiple experiments on your metrics. This Impact Analysis is a great way to demonstrate the value of experimentation to leadership. It highlights not only your wins, but also all of the money saved by NOT shipping something that was worse for your users. • New REST Endpoints: You can now programatically create projects, environments, and SDK Connections via the REST API. This is especially useful for those wanting to deeply integrate GrowthBook into their CI/CD pipelines. • Performance Improvements: We’ve made significant improvements behind the scenes to deliver a faster, more responsive experience while using GrowthBook. These changes include reducing network calls, optimizing database queries, caching frequently accessed data, and more. • Advanced Search Filter Syntax: Searching within GrowthBook just got a lot more powerful! Use fields and complex operators to find exactly what you're looking for. Check out the docs for more info and examples. • Multi-Org Improvements: Large enterprises who have enabled GrowthBook’s “Multi-Org Mode” now have a new option for user provisioning. Now, you can let users self-select organizations during sign up. When a user authenticates via SSO and visits GrowthBook for the very first time, they will be shown a list of all organizations and can pick one or more to join. After joining, they can easily switch between organizations and join additional ones at any time. Check out more details on our GrowthBook blog or on GitHub.

Hi everyone! My name's Ryan, and I'm excited to join GrowthBook as a new Developer Advocate. We’re thrilled to announce some exciting changes to our community to foster more discussions about experimentation and GrowthBook usage. We’ve created four new channels: • #experimentation: Discuss challenges, ideas, and insights related to A/B testing. • #feature-flags: Discuss best practices and experiences with feature flags. • #share: Share your experimentation wins, surprise results, feature flag usages, sites, and tips and tricks. Our team will also post helpful tips and tricks here. • #intros: New members start here! Give them a warm welcome 👋 and introduce yourself! To kick things off, we’ll be posting discussion topics regularly. Plus, we’re launching a fun challenge until the end of August! Participate and get a free GrowthBook t-shirt 👕 (one per person). Here’s how: • Share an experience or tip in #feature-flags. • Discuss a challenge or insight in #experimentation. • Help another member by answering their question or solving a problem. • Leave a review on G2. Once you’ve done any of these, just send me a DM! Remember, our team is here to answer questions, handle requests, and address bug reports. Your feedback is crucial to making GrowthBook better for everyone. Looking forward to seeing you all in the new channels and reading your contributions!

Hey everyone! 🎉 We’re excited to announce the launch of WebLens - our brand-new Hypothesis Generator. What is WebLens? WebLens is an AI-powered tool designed to inspire your ideas for A/B testing and website optimization. Using large language models (LLMs) and optimization best practices, WebLens crafts hypotheses to enhance user engagement and improve website performance. This can help you get a fresh perspective and overcome myopia by generating new ideas you may not have considered. Key Features: 1. Analyze Your Website: WebLens scrapes your web page, capturing screenshots to evaluate your current site. 2. Hypothesis Generation: Get AI-driven hypotheses tailored to boost user engagement and website performance. 3. Implement A/B Tests: Seamless integrate generated hypotheses into GrowthBook for experimentation and tracking. How to Get Started: 1. Try it out: Test WebLens and uncover actionable insights for your site. 2. Early User Reviews: We’re looking for 3-5 early users to share their initial feedback. 3. Engage on Product Hunt: Support us on Product Hunt with upvotes and comments during our upcoming launch.

Hi all. Happy Monday! We've got more AI news 🤖 • We have a chatbot working hard to answer questions right on our docs page. Hit the Ask AI button to start the chat. (I've found its responses helpful, but, of course, YMMV.) • That same chatbot is also accessible here in Slack via the #ask-ai channel. Just tag @brash-pillow-71627 in your message, and they'll respond with an answer. You can also ask follow-up questions in the thread.

Hi <!everyone> We're publicly launching WebLens today 🚀 Thanks for all your feedback!. If you haven't tried it yet, WebLens is a free AI powered A/B test idea generator for websites. You can check out a quick video about it here: - and if you had a moment, we would really appreciate a comment or vote on our Product hunt page: https://www.producthunt.com/posts/weblens

Hey <!everyone>! We've had some big announcements in the past few weeks. Here's a recap ICYMI: AI News • We launched WebLens, an AI-powered hypothesis generator for A/B tests. It's quick and simple to use, so give it a whirl and let us know how it goes. • Have questions about GrowthBook? Chat with our AI bot, Kapa, in the #C06JQ8WNQVA channel. The bot is trained on our docs and other materials, so its responses are top-notch 💪 August Challenge We're giving away free GrowthBook t-shirts 👕 to anyone who completes one of our challenges before the end of August: • Share an experience or tip in #C07E4HB6ZEK. • Discuss a challenge or insight in #C07E4HA06MD. • Help another member by answering their question or solving a problem. • Leave a review on G2. Send me a DM (@strong-mouse-55694) when you complete one of the items, and I'll get you a shirt! 3.1 Release 🎉 Did you catch our latest release? It's chockablock with new features, bug fixes, and other goodies.

🚨 Don't put your test strategy at risk! 🚨 Many A/B testing programs fail before they even take off. Low experiment frequency, hidden biases, costly setups—the risks are real and could be sabotaging your results without you even realizing it. We've got you covered in our latest blog with the 9 most common mistakes that might be sinking your experimentation program. 👉 Read the full article here: https://blog.growthbook.io/experimentation-program-mistakes-to-avoid/ 📅 Plus, join Ryan and myself next Wednesday for our live demo! Get an overview of GrowthBook and Learn how to easily set up and run A/B tests *Sign up here*.

🙌 We're Almost at 6k Stars on GitHub! We’re incredibly close to hitting 6,000 stars on GitHub, and we couldn’t have done it without the amazing support of people like you—our community! To celebrate, we want to show our appreciation with a special giveaway. How to Get Involved: Tell us what you love most about GrowthBook! Whether it’s your favorite feature or how you're using GrowthBook in your experiments, share your thoughts in this slack thread or tweet at us. We’ll select one lucky participant to win a swag kit from our shop. • Deadline: The Giveaway will run until Sept 30th. • Winner Selection: One winner will be picked at random and contacted via email. Thank you for being part of the journey, The GrowthBook Team Terms and conditions apply. The prize draw competition is open to all participants who comment/tweet on the post. This Giveaway is not affiliated with GitHub.

🚀 GrowthBook 3.2 is Live! 🚀 We’re excited to share the latest updates! Here’s what’s new: ✨ Supercharged Saved Groups – Manage user groups with CSV uploads, enhanced browsing, and SDK optimizations. ⚡ Experiment Significance Alerts – Get real-time notifications when your metrics hit significance, sent to Slack or Discord. 📊 Deeper Metric Insights – Sort recent experiments and analyze lift to quickly see which experiments had the biggest impact. 🛠️ Improved Visual Editor – Enjoy a cleaner, faster UX with inline text editing. 🌐 Vercel & Azure SCIM Support – Seamless integration for developers with Vercel Edge Config and Azure SCIM user provisioning. Want to learn more? Read about the updates in our blog. 📅 Join us for an AMA in the #C07P6BE15B6 channel on October 2nd to ask anything about 3.2 and get tips from our team!

🚨 The Metrics Struggle is Real – Let’s Make It Easier 🚨 Metrics got you stumped? 🤔 Join our last-minute demo to dig into what makes a good metric, how to avoid common pitfalls, and ensure your metrics are driving real impact—not just adding noise. We’ll cover: • Setting up meaningful metrics (binomial, count, duration, revenue) • Automating data collection from tracking tools • Connecting metrics to your business goals • Steering clear of common metric mistakes 📆 When: October 24, 8:00 AM PDT, 4:00 PM CEST 🕗 Duration: 30 minutes with Q&A 🔗 Register here Let’s dive in together and make metrics work for you! 📊

🎉 KubeCon Announcements! 🎉 We’ll be at KubeCon/OpenFeature Summit in Salt Lake City next week, and we’d love to see you there! Join us for a Happy Hour with our friends at Signoz 🍻 – it’s the perfect opportunity to connect, unwind, and mingle with other conference attendees. Our very own @fresh-football-47124 will also be speaking at OpenFeature Summit on “Experimentation at Scale: Lessons Learned from Top Companies” – be sure to catch his talk! 📅 Event Details Happy Hour with Signoz When: Nov 12th, 4:30 PM MST Where: Studio at SoundWell, Salt Lake City 👉 RSVP here: https://lu.ma/8uws6qyr

📢 Last Call: Webinar – Tomorrow! 🚀 How A/B testing saves your dev team from wasting half their time Think your features are game-changers? Think again. Top companies like Microsoft, Netflix, and Airbnb found that 90% of what they build doesn’t make the cut. Learn how to build what users actually want—and skip the rest. 📅 Date: Nov 21, 2024 ⏰ Time: 8:00 AM PST / 5:00 PM CET Format: Short 10 minute presentation, 10 minute demo, 10 minute Q&A 🔑 Key Takeaways: • Spot and scrap low-value features with confidence • Focus on outcomes that truly matter • Free up dev time to outpace the competition 📋 Register now to save your spot!

🎉 Announcing our December Community Challenge! Win a $100 credit to the GrowthBook shop Two ways to win: 1️⃣ Enter the raffle: • Create a GrowthBook-related post and tag us • Follow us • Share the post in #C07EMJFGVK6 or DM it to me (@strong-mouse-55694) Social media posts can be anything from highlighting a feature you like to sharing your team's experimentation process. (If you want some inspiration, just let me know!) 2️⃣ Guaranteed win • Publish a GrowthBook post on your blog • Include a link to www.growthbook.io • Share it in #C07EMJFGVK6 • Get your $100 credit instantly! Here are some possible topics: "How I Set Up My First A/B Test with GrowthBook," "How We Increased Conversion by X% Using GrowthBook," or "Integrating GrowthBook with X platform" Find us on: • Bluesky: https://bsky.app/profile/growthbook.io • LinkedIn: https://www.linkedin.com/company/growthbook/ • X: https://x.com/growth_book • Instagram: https://www.instagram.com/growthbook_ab/ • Threads: https://www.threads.net/@growthbook_ab • Mastodon: https://mastodon.social/@growthbook • Facebook: https://www.facebook.com/profile.php?id=61566028651159 This challenge runs for the month of December 2024. A winner for the raffle will be selected in early January. Drop any questions below.

Live Demo: Accelerate Feature Optimization with Multi-Armed Bandits Join us to see how leading teams are replacing traditional A/B tests with intelligent experimentation. Learn how to ship winning features faster with automated optimization 🗓️ Dec 12, 2024, 8:00 AM PST / 5:00 PM CET 🎤 Led by Ryan Feigenbaum Here's what we'll cover: • What is a bandit? • How does it differ from traditional A/B tests? • Where does it shine? Where does it fail? • How to set up a bandit in GrowthBook, using Framer/GA/BigQuery/Visual Editor • How to interpret results 👉 Register Now (30 min + Q&A)

🔧 Simplify Your Experimentation Stack with Built-in Analytics Growth teams, we understand that managing a data warehouse is a hassle. That’s why we’re introducing Managed ClickHouse directly in GrowthBook Cloud. What’s in it for you? ✨ No infrastructure headaches—focus on experiments. ✨ Lightning-fast SQL queries paired with built-in statistical analysis. ✨ Fully integrated with GrowthBook’s experimentation features. We’re kicking off a Private Beta with limited spots! Early access includes: • Priority feature requests. • Direct feedback loop with our engineering team. • Preferred pricing lock-in. Want in? Reach out to claim your spot before we’re full.

ICYMI and looking for something other than a Hallmark movie: • Up your feature flagging and experimentation game with prerequisite targeting: • Learn all about our most exciting feature to date: Multi-Arm Bandits 🦝: ◦ Get all your questions answered about ↑ MABs:

Hi everyone, Just wanted to send a quick note and wish you all a happy Christmas! 🎄

🎉 Happy New Year! 🎉 Start the year off right with a session designed to help you tackle feature flagging, experimentation, and all things GrowthBook. Got questions? We’ve got answers! 📅 Date: Jan 7, 2025 ⏰ Time: 08:00 AM Pacific Time (US and Canada) 📍 Zoom Link: Register Here 🎉 What’s New in GrowthBook 3.4 In this session, we’ll walk you through new tools and updates designed to make experimentation easier and collaboration smoother: • Simulation • Custom Fields • Shareable Reports • Guardrail Notifications and more! Join us to ask questions, explore ideas, and get practical advice to make the most of your data in 2025.

👉 Did you miss today’s live Q&A? Don’t worry—we’re hosting another session in two weeks. Sign up here to join the next one. 📅 Date: Jan 21, 2025 ⏰ Time: 12:00 PM Pacific Time (we have your back, west coast folks!) 🎉 What’s New in GrowthBook 3.4 • 🧪 Simulation – Test scenarios before rolling out changes • 🏷️ Custom Fields – Organize experiments your way • 📊 Shareable Reports – Communicate results effortlessly • ⚠️ Guardrail Notifications – Catch anomalies before they impact decisions • 📑Experiment Templates - Standardize experiment setup and execution Join us for live Q&A, real-world insights, and a hands-on demo! See you there!

🚀 GrowthBook 3.4 is here! This release includes over 150 updates designed to streamline experimentation, improve collaboration, and automate workflows. Here are the highlights: • Custom Fields & Experiment Templates – Standardize how your team runs experiments • Shareable Experiment Reports – Easily share results with leadership, partners, or Slack • New Metric Types – Retention, Count Distinct, Max Value, and more • Environment Forking – Instantly clone feature flag rules for new environments • CMS Integrations – Native support for Contentful & Strapi • Faster SDKs & Feature Simulation – Improved Node.js & Edge SDKs + new Simulate section 🎙️ Join our live demo to see GrowthBook 3.4 in action and get your questions answered! Register here → 📖 Read the full blog post for details

Hey all! I'm looking to improve our docs 📄, especially around our SDKs. If there's anything you wish could've been clearer or should be added, let's chat about it. Feel free to book a meeting, post it here, or send me a DM: https://calendar.app.google/V29yNm9ek6F6vRec7

Hi Everyone. We've been rolling out improvements to the design recently, particularly for dark mode and the features page. Please let us know if you have any feedback (positive or negative) or issues.

Hi Everyone, 🚀 GrowthBook 3.5 has landed! In this release, we focused on user experience and productivity improvements. 🛠️ Revamped DevTools Extension: Debug flags and experiments more easily with Archetype integration, Firefox support, dark mode, and event logs. 📊 Power Calculator: Uses your historical data to accurately estimate experiment run times and minimum detectable effects, enabling more precise experiment planning. 🧭 Experiment Decision Framework: Get clear nudges like “Ship now” or “Roll back ASAP”. 🔧 SDK Upgrades: Prerequisite features & sticky bucketing now in 12+ languages, plus Open Feature support. 🎨 Design System Updates: Lots of improvements to experiment and feature flag pages, and especially in dark mode. 🎙️ Join our live demo next Thursday and bring your questions. 📖 Read the full blog post for details

Hey Folks, If you’re in the Bay Area, join us tomorrow at the ClickHouse Meetup in SF! Graham McNicoll (Co-founder @ GrowthBook) will share how to run a/b tests with GrowthBook and ClickHouse. Swing by to say hi and maybe grab some free swag. Details here

Are you using these features? Check out our latest blog post on 5 power tools for feature flagging at scale you shouldn't sleep on, including: • prerequisites • simulation & archetypes • dev tools • auto staleness detection • code refs Add a comment if you're using one of these features or have questions. https://blog.growthbook.io/feature-flagging-at-scale-5-power-tools-you-shouldnt-skip/

Ever wish you could see exactly where feature flags are used in your codebase, right from GrowthBook? With code refs, you can! We recently made a full walkthrough on how to set up and use this feature.

Is anyone testing LLMs in their apps? We discuss some of the finer points of testing AI in a recent blog post: https://blog.growthbook.io/how-to-a-b-test-ai-a-practical-guide/

GrowthBook Version 3.6 is now live 🎉 https://blog.growthbook.io/growthbook-version-3-6/ Highlights from this release: • Safe Rollouts • Time Series View • Official Jira Integration • Decision Framework Events and API • Dev Tools for SSR • Fact Table JSON Columns