Design Cost-Optimized Database Solutions

Exam Guide: Solutions Architect - Associate ⚡ Domain 4: Design Cost-Optimized Architectures 📘 Task Statement 4.3 🎯 Designing Cost-Optimized Database Solutions is about choosing the least expensive database design that still meets application requirements for performance, durability, retention, and availability. Start with the data model and access pattern , then choose the database type , then optimize cost with right-sizing, caching, retention, connection management, and backup strategy . You are often deciding between: 1. Relational vs non-relational 2. Provisioned vs serverless or on-demand 3. Read replicas vs caching 4. Keep data online vs archive or delete Knowledge 1 | AWS Cost Management Features Cost Allocation Tags & Multi-account Billing Database cost should be tracked clearly by: 1 Environment (prod/dev/test) 2 Team or business unit 3 Application We covered Cost Allocation Tags & Multi-account Billing in Task Statement 4.1 and Task Statement 4.2 , but repetition is key even