Elastic's transformation to a serverless architecture for Elastic Cloud Serverless involved shifting from a stateful system to a stateless design, leveraging cloud-native object storage and Kubernetes for orchestration. The changes aimed to meet evolving customer needs for simplified infrastructure management and scalability while optimizing performance and reducing operational complexity. Key strategies included using a push model for control and data communication, automated upgrades, and flexible usage-based pricing.

After two years of using serverless technology on Cloudflare Workers, the Unkey team transitioned to stateful Go servers to improve API performance and reduce latency by six times. This shift simplified their architecture, enabled self-hosting, and removed the complexities associated with serverless limitations, ultimately enhancing developer experience and operational efficiency.

The article discusses the innovative approach taken by Vercel in building serverless servers, emphasizing the fluid architecture that allows for scalability and efficiency. It explores the technical challenges faced during development and how they were overcome to enhance performance and user experience.