Core Insights - Amazon Web Services (AWS) has launched Amazon DocumentDB Serverless, a new configuration of Amazon DocumentDB that automatically scales compute and memory resources based on application needs, potentially saving up to 90% in costs compared to pre-provisioned resources [1][2]. Group 1: Product Features - Amazon DocumentDB Serverless introduces a new unit called DocumentDB Capacity Unit (DCU), which includes approximately 2 GiB of memory along with corresponding CPU and network resources [2]. - The service continuously monitors resource usage (CPU, memory, and network) during application execution and can automatically adjust DCUs without affecting database availability [2]. - Users can switch existing clusters from provisioned instances to serverless configuration without data migration, similar to changing instance types [2]. Group 2: Use Cases and Advantages - Amazon DocumentDB Serverless is suitable for dynamic workloads, such as handling peak traffic during promotional events, development and testing environments, and rapidly growing new applications [5]. - It allows flexible resource management across multiple databases in a multi-tenant environment, which is beneficial for enterprise applications or SaaS providers [5]. - The service can balance read and write capacity for workloads with fluctuating query traffic, enabling independent scaling of read and write instances to accommodate additional load [5]. Group 3: Availability and Pricing - Amazon DocumentDB Serverless is available in Amazon DocumentDB version 5.0 and supports both new and existing clusters, offering on-demand DCU billing by the second at a fixed rate [3].