awsPractitioner

Spin Up Amazon Aurora PostgreSQL Serverless in Seconds

3 min read AWS BlogMar 25, 2026Reviewed for accuracy

Practitioner — Hands-on experience recommended

In today's fast-paced development environment, the ability to quickly provision databases is crucial. Amazon Aurora PostgreSQL's serverless offering addresses this need by allowing you to create a database in seconds. This is particularly useful for developers who want to prototype applications or run tests without the overhead of complex network configurations.

The express configuration feature simplifies the setup process. You can create an Aurora PostgreSQL serverless database without an Amazon VPC network, which means you can get started with just two clicks. The database includes an internet access gateway, enabling secure connections from anywhere using the PostgreSQL wire protocol. You can also modify settings like the capacity range for the serverless instance or add read replicas during and after creation, providing flexibility as your application scales.

In production, this capability can significantly reduce the time it takes to get your applications off the ground. However, be mindful of how you manage your database connections and capacity settings. While the express configuration is convenient, it may not suit every use case, especially if you require more control over your network architecture. Always evaluate your specific requirements before jumping in.

Key takeaways

→Leverage express configuration to create databases without an Amazon VPC.
→Utilize the internet access gateway for secure global connections.
→Modify capacity settings during and after database creation for flexibility.

Why it matters

This feature drastically reduces the time to deploy databases, allowing teams to focus on development rather than infrastructure setup. It’s a significant advantage for rapid prototyping and agile development cycles.

Code examples

CLI

$ aws rds create-db-cluster --db-cluster-identifier channy-express-db \
    --engine aurora-postgresql \
    -with-express-configuration

Python

1import psycopg2
2import boto3
3
4auth_token = boto3.client('rds', region_name='ap-south-1').generate_db_auth_token(DBHostname='channy-express-db-instance-1.abcdef.ap-south-1.rds.amazonaws.com', Port=5432, DBUsername='postgres', Region='ap-south-1')
5
6conn = None
7try:
8    conn = psycopg2.connect(
9        host='channy-express-db-instance-1.abcdef.ap-sou