Amazon Web Services (AWS) offers a fully managed database service called Relational Database Service (RDS), which can be complex to navigate in terms of pricing. The RDS PostgreSQL pricing formula is based on two main components: database instances and storage, with extra charges for backup storage, snapshot export, data transfer, technical support, Multi-Availability Zone deployments, and other features. Understanding these variables will help control cloud costs and maximize investment in RDS. The article provides a detailed breakdown of each element affecting the final price, including tips on estimating your RDS pricing, managing backup storage, optimizing data transfer, and simplifying pricing for time-series data.