Find out the biggest serverless announcements at re:Invent 2025. Learn about the new Lambda Managed Instances and Lambda Durable Functions.

TheBurningMonk's blog is a platform for sharing insights and expertise in cloud computing, serverless architecture, and distributed systems design. Through articles, tutorials, and case studies, TheBurningMonk offers insights into building scalable, resilient, and cost-effective cloud-native applications using serverless technologies. Readers can learn about architectural patterns, deployment strategies, and best practices for designing serverless applications that leverage the scalability and flexibility of cloud platforms. Additionally, TheBurningMonk provides updates on the latest developments in serverless frameworks, cloud services, and event-driven architectures to help developers stay ahead of the curve and harness the full potential of serverless computing.

theburningmonk.com

AWS re:Invent 2025 introduced Lambda Managed Instances, allowing functions to run on dedicated EC2 instances in your account while AWS handles management, addressing cost concerns at scale. Lambda Durable Functions enable multi-step workflows with checkpoints and replay mechanisms, supporting execution timeouts up to 1 year for async invocations. Additional announcements include S3 Vectors reaching GA with improved performance, S3 Tables gaining intelligent-tiering and replication support, and CloudFront adding mutual TLS authentication.

The biggest re:Invent 2025 serverless announcements

S3 Vectors goes GA with better scale and performance

S3 Tables support intelligent-tiering and replication

CloudFront supports mutual TLS authentication