New tool: durable-viz turns AWS Lambda durable function handlers into flowcharts using static analysis. No deployment, no credentials. TypeScript, Python, Java. CLI or VS Code extension. npx durable-viz handler.ts --open github.com/gunnargrosch...

context.invoke() unlocks a pattern: one Lambda coordinator dispatching specialist agents as separate functions. Every call checkpointed, coordinator suspended while specialists run. dev.to/gunnargrosch... builder.aws.com/content/3BRI...

Gothenburg Serverless is back! Join us at Knightec in Lindholmen on April 7: - Spec-Driven Development for Serverless (Isak Holmdahl, Knightec) - Long-Running Serverless Workflows as Sequential Code (me) Food and drinks from 17:30. Space is limited: www.meetup.com/gothenburg-s...

Lambda Durable Functions: sequential code, checkpointed state, up to a year of execution. Zero compute during waits. Wrote about checkpoint/replay and built an AI support triage workflow with human-in-the-loop callbacks. dev.to/gunnargrosch... builder.aws.com/content/3B5i...

This game is so addictive!

Does your circuit breaker trip when it should? Do your retries back off or hammer a dead endpoint? failure-lambda 1.0: inject real failure conditions into any Lambda function to find out. dev.to/gunnargrosch... builder.aws.com/content/3Aqx... #aws #serverless #chaosengineering

DOOM runs on everything. Now AI coding assistants join the list. doom-mcp: an MCP server that lets Claude Code, Kiro, or Cursor play the actual DOOM engine. dev.to/gunnargrosch... builder.aws.com/content/3AmP...

I'll be in Amsterdam during KubeCon Europe week (March 23-26). Exploring what's next after 5+ years in DevRel at AWS. No ticket yet (hint hint), but around all week. Want to grab coffee and talk cloud native, AI, or dev experience? DM me! #KubeConEU #CloudNative

In-memory circuit breakers are silently useless on Lambda. Each environment tracks failures independently. With 50 concurrent environments and threshold 5, you need 250 failures before any circuit opens. dev.to/gunnargrosch... builder.aws.com/content/3Aj5...

New post: Multi-agent systems with RISEN prompts. The routing logic lives in the coordinator Steps section, not in code. Agents as tools, hooks for observability, routing eval with stubs. dev.to/gunnargrosch... builder.aws.com/content/3AXe...

New post: Lightweight evals for AI agent output quality. Structural checks, LLM-as-judge, calibration loop. RISEN prompts double as your eval spec. Runnable demo with two domains. dev.to/gunnargrosch... builder.aws.com/content/3ARU...

New post: RISEN (Role, Instructions, Steps, Expectation, Narrowing) turns vague system prompts into behavioral contracts for AI agents. Three scenarios with a runnable demo, including one with MCP tools. builder.aws.com/content/2cwk... dev.to/gunnargrosch...

After over five years at AWS, I'm part of the February layoffs. I've spent that time close to practitioners and the community, and that's what I'm looking for in what's next. Developer advocacy, DevRel, or community building. Longer post here: www.linkedin.com/posts/gunnar...

New post: Streaming Bedrock Responses Through API Gateway and Lambda ~500ms to first token instead of 8-10s. A side-by-side demo with the code and config to make it work. dev.to/gunnargrosch... builder.aws.com/content/3A9e...

New post: Building AI Agents in TypeScript with the Strands Agents SDK TypeScript support is in preview. A quick look at getting started: five examples from minimal agent to multi-tool orchestration. dev.to/gunnargrosch... builder.aws.com/content/3A55...

New post: Building the AWS Serverless Power for Kiro Built a Kiro Power with 25 MCP tools and ten steering guides for AWS serverless. Same expertise, different packaging. dev.to/gunnargrosch... builder.aws.com/content/3A1s...

New post: Turning AWS Serverless Experience into a Claude Code Plugin Encoded serverless expertise into skill guides so Claude makes the judgment calls that come from experience, not just documentation. builder.aws.com/content/39yk... dev.to/gunnargrosch...

New post: Extending Claude Code with Plugins and Skills for AWS Development Teach Claude your deployment process and security checks once. Skills are markdown files that replace repeated explanations. Plugins package them for your team. builder.aws.com/content/39vd... dev.to/gunnargrosch...

New post: Improving Your AWS Development Workflow on Claude Code with MCP Servers Seven MCP servers for AWS development. Query CloudWatch, design DynamoDB schemas, automate browser testing, and more. builder.aws.com/content/39tZ... dev.to/gunnargrosch...

New post: Automating Your Workflow with Claude Code Hooks CLAUDE.md is the style guide. Hooks are the linter. 10 practical examples you can use right away. builder.aws.com/content/39qV... dev.to/aws/automati...

CLAUDE.md teaches Claude Code your conventions. Write them once, remembered every session. New post: templates, modular rules, and the pitfalls that waste your context window. dev.to/aws/teaching... builder.aws.com/content/39nt...

New guide: Claude Code with Bedrock in VS Code and JetBrains Get inline diffs and visual code review in your IDE while keeping code in AWS. Covers VS Code authentication (the tricky part) and JetBrains setup. builder.aws.com/content/39i6... dev.to/aws/from-ter...

Claude Code is all the rage! Did you know you can run it with Amazon Bedrock for enterprise security and governance? Quick guide covering setup, auth, model config, and cost optimization 👇 builder.aws.com/content/39gP... #AWS #AmazonBedrock #ClaudeCode

My friend Adrian Hornsby's book "Why we still suck at resilience" is published! Do your organization a favor and get this book! It tackles the frustrating reality of why resilience practices fail and gives you tools to fix it. Congratulations on the launch, Adrian! ❤️ leanpub.com/whywestillsu...

Awesome event with Gothenburg Serverless hosted by our friends at Elva! Julian and I spent three hours walking through and showing demos of everything new with serverless and agentic AI! Thanks to everyone who joined! I love the serverless community! ❤️

Great to be back at Stockholm Serverless meetup! Julian and I had a lot of fun talking about everything new with serverless and agentic AI! And there was definitely a lot to cover! We could without a doubt have gone on for a few more hours. Thanks to everyone who joined! I love this community! ❤️

Such a fun event in Helsinki with AWS User Group Finland! One of the attendees described what I did as "lively" and I guess that sums it up quite well! As always, these events are all about the community and the people. I'm leaving Helsinki with a full heart. I love you all! ❤️

Happy Friday, everyone! We're celebrating with proper Italian kebab pizza and proper Italian pineapple pizza! 🍕

Excellent insights from Ben Kehoe (@ben.kehoe.io) via Gunnar's (@gunnargrosch.com ) summary with the full talk video in embedded. I would encourage you to have a read and watch the talk. builder.aws.com/content/37A0...

🎯 DEV Track Spotlight: Breakout Sessions & Code Talks from AWS re:Invent 2025 I've covered 27 incredible sessions featuring AWS Heroes and speakers from AWS. From multi-agent AI systems to serverless, Rust performance to legacy modernization. #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 27 of DEV Track Spotlight 🤖 Together with @readysetcloud.io, I demonstrated how to build production-ready multi-agent AI systems at AWS re:Invent (DEV415). The key? Treat agents like distributed systems with A2A protocol, MCP for typed interfaces, and RISEN prompts for deterministic behavior.

Part 26 of DEV Track Spotlight 🚀 Shridhar Pandey (AWS) and I built a complete serverless image generation app - backend, frontend, observability - using Kiro CLI. Session: Serverless Full-Stack in Action: AI-Driven Developer Experience #AWSreInvent #DEVTrack #AWSCommunity

Part 25 of DEV Track Spotlight 🤖 DEV332 with Joy Chakraborty (AWS) & Elizabeth Fuentes Leone (AWS) "Simple things should be simple to build and deploy" - building multimodal AI agents with Strands Agents SDK & Amazon S3 Vectors #AWSreInvent #DEVTrack #AWSCommunity

Part 24 of DEV Track Spotlight 🦀 DEV405 with @darko.rup12.net (AWS Principal Developer Advocate) "With the world of LLMs, with coding assistants, with everything at your fingertips, you don't need to write Python anymore. You can write Rust." #AWSreInvent #DEVTrack #Rust

Part 23 of DEV Track Spotlight 🤖 DEV331 with Erik Hanchett & Du'An Lightfoot (AWS Developer Advocates) "Agents still need compute, storage, databases. All the knowledge you have is still valuable up until this point and beyond." #AWSreInvent #DEVTrack #AWSCommunity

Part 22 of DEV Track Spotlight 🤖 DEV403 with @jameshood.dev (AWS) & @maishsk.com (AWS) "I am also a former AI skeptic. My previous experience with AI was trying flashy demos on real world code and watching it crash and burn." Then he discovered Agent SOPs. #AWSreInvent #DEVTrack #AWSCommunity

Part 21 of DEV Track Spotlight 🚀 DEV304 with Elizabeth Fuentes Leone (AWS) & Rossana Suarez (AWS Container Hero, Naranjax) Werner Vogels' most famous quote: "Everything fails all the time." Do you find out from dashboards or angry customers? #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 20 of DEV Track Spotlight 🗄️ DEV315 with Namrata H Shah (AWS Community Hero) & Rob Koch (AWS Data Hero) "When databases can discover, recommend, and optimize on their own, they stop being reactive systems and become intelligent partners." #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 19 of DEV Track Spotlight 💰 DEV318 with Steph Gooch (AWS) & Kenneth Attard (AWS Community Hero, Betsson Group) "It's Friday morning, you've had an easy week... And then you get this email, your AWS budget has gone off" #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 18 of DEV Track Spotlight 🤖 DEV313 with Haowen Huang (AWS) & Cyrus Wong (AWS AI Hero) "By the 2030s, we will see an agent economy operating like a global neural network of interconnected agents." Voice-controlled humanoid robots, robot dogs & drones! #AWSreInvent #DEVTrack #AWSCommunity

Part 17 of DEV Track Spotlight 🎲 DEV330 with Olivier Leplus & Tiffany Souterre (AWS) Building a multi-agent AI Game Master with Strands Agents SDK - live coding that made complex agent orchestration look simple! #AWSreInvent #DEVTrack #AWSCommunity

Part 16 of DEV Track Spotlight 🤖 DEV301 with @ana.dev (AWS) & David Victoria (AWS Community Hero, Caylent) "Agents need to think locally, use tools locally, keep context between sessions, and sync to cloud once connectivity returns." #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 15 of DEV Track Spotlight 🗄️ DEV308 with Oleksii Ivanchenko (AWS) & @vkazulkin.bsky.social (AWS Serverless Hero) "Why we need another serverless database?" Aurora DSQL bridges DynamoDB's serverless simplicity with relational ACID guarantees. #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 14 of DEV Track Spotlight ⚡ DEV320 with Steve Rice (AWS) & Ben Shumpert (AWS) "Feature flags are the secret weapon of moving fast when you're developing software, as well as responding to issues on production." #AWSreInvent #DEVTrack #AWSCommunity

Part 13 of DEV Track Spotlight 🧠 DEV347 with Ben Kehoe (AWS Serverless Hero, Siemens) "A builder's true job is solving problems, which may or may not require building something." #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 12 of DEV Track Spotlight 🤖 DEV327 with Haowen Huang (AWS) & Jacky Wu (AWS) "Although we are still in the very early stage of agentic AI, we have a vision of a future world powered by AI agents." #AWSreInvent #DEVTrack #AWSCommunity

Part 11 of DEV Track Spotlight 🤖 DEV302 with AM Grobelny (AWS) & Nicki Stone (Amazon) Microsoft just shifted from Semantic Kernel to Agent Framework, so this talk covered both the present and future of .NET AI development! #AWSreInvent #DEVTrack #AWSCommunity

Part 10 of DEV Track Spotlight 🛠️ DEV314 with @erikch.bsky.social (AWS) & @Nikhil Swaminathan (AWS) Kiro's spec-driven development: the evolution beyond vibe coding. Requirements → Design → Tasks → Implementation with property-based testing & agent hooks. #AWSreInvent #DEVTrack #AWSCommunity

Part 9 of DEV Track Spotlight 🤖 DEV333 with Phil de Valence & @mattlewis.bsky.social "65% of enterprise apps are legacy. AI agents are changing modernization—not with theory, but production-ready patterns already working for customers." #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes

Part 8 of DEV Track Spotlight ⚡ DEV312 with @anahit.bsky.social (AWS Data Hero, F-Secure) "Serverless abstraction makes infrastructure seem magical. But we're still in the same messy physical world with all its complexities." #AWSreInvent #DEVTrack #AWSCommunity #AWSHeroes