AWS re:Invent 2025: The Complete Developer Roundup
Everything developers need to know from the biggest cloud conference of the year: new silicon, serverless innovations, multicloud partnerships, and Werner Vogels' emotional farewell after 19 years.
Day-by-Day Highlights
Day 1 December 1 - Partner Day & Expo Opens
- AWS-Google Cloud multicloud interconnect announced
- Partner keynote featuring Accenture, Deloitte, Salesforce
- Expo hall opens with 400+ vendor booths
- AWS Certification Lounge records 5,000+ exam takers
Day 2 December 2 - CEO Keynote (Adam Selipsky)
- S3 Express One Zone: Single-digit ms latency storage
- EKS Auto Mode: Fully managed Kubernetes
- Aurora Limitless: Horizontal PostgreSQL scaling
- ElastiCache Serverless: On-demand caching
- AWS-Google zero-egress partnership details
Day 3 December 3 - Database & Analytics Day
- Amazon Q for BI: Natural language analytics
- Redshift Serverless Next: 10x query performance
- Neptune Analytics: Graph + vector search
- DynamoDB global tables v3 with conflict resolution
Day 4 December 4 - Werner Vogels' Final Keynote
- Graviton5: 50% more compute, 40% better memory
- Trainium3: 2x AI training performance
- Lambda Durable Functions: Stateful serverless
- Werner's "Frugal Architect" principles presentation
- Emotional farewell after 19 years as CTO
Day 5 December 5 - Community Day & re:Play
- Community Hero awards and recognition
- Jam sessions and hands-on workshops
- re:Play party with 30,000+ attendees
- Next year's re:Invent dates announced
Major Announcements Deep Dive
Graviton5: AWS's Most Powerful Processor
The fifth generation of AWS's custom ARM-based processors delivers unprecedented performance for cloud workloads.
Trainium3: Next-Gen AI Training
Purpose-built for training large language models, Trainium3 doubles training throughput while reducing costs.
- 2x training performance over Trainium2
- Native support for 16K+ context models
- Optimized for PyTorch 2.0 and JAX
- UltraCluster configurations up to 100K chips
Lambda Durable Functions: Stateful Serverless
The biggest Lambda innovation since its 2014 launch, Durable Functions enables long-running, stateful workflows without managing infrastructure.
Key Capabilities
- Automatic state persistence across invocations
- Built-in workflow orchestration
- Human-in-the-loop approval patterns
- Up to 1 year execution duration
- Seamless retry and error handling
Werner Vogels: End of an Era
After 19 years as AWS CTO, Werner Vogels delivered his final re:Invent keynote. His tenure shaped cloud computing as we know it, from the early days of EC2 and S3 to today's AI-powered infrastructure.
"The cloud is not just about technology - it's about enabling builders to create things that were impossible before. My job was never about the infrastructure; it was about removing barriers for developers."
Werner's Legacy by the Numbers
Developer Action Items
What You Should Do Now
- Test Graviton5: New instance types available in preview - benchmark your workloads
- Evaluate EKS Auto Mode: Simplify Kubernetes management for new clusters
- Try Lambda Durable Functions: Preview available for long-running workflows
- S3 Express for hot data: Evaluate for latency-sensitive workloads
- Watch session recordings: Available on YouTube within 2 weeks
Dillip Chowdary
Tech Entrepreneur & Innovator