When to consider RDS
Our recommendation is to evaluate RDS first when your application already runs on AWS and you need managed PostgreSQL. Then check the supported version, extensions, region, and recovery requirements for your application.
The table records selected billing and operating facts. It does not establish that a particular instance can support your expected number of users.
Choose the deployment before requesting a price
Decide whether the app can use a single database instance or needs a standby for failover. RDS has different Multi-AZ arrangements, so record the exact deployment option instead of using a generic high availability label.
If the app needs more read capacity, evaluate that separately from recovery and failover. The database topology affects both operating behavior and cost.
Write down the complete estimate
Include runtime, instance class, storage configuration, backup requirements, and data transfer. Check whether the chosen PostgreSQL version has additional support charges. Keep optional discounts and credits separate from the recurring baseline.
The official RDS pricing page describes its billing components and links to the AWS calculator.
Plan and test recovery
Set the restore window your business needs, then test the recovery process. Decide how to handle snapshots and retained backups when deleting or replacing a database. Document who can restore it and how the application reconnects.
Use the RDS and Azure comparison for a direct choice, or return to managed PostgreSQL for the wider shortlist.