# Amazon Aurora serverless adds 16‑ACU scaling in one second

> Aurora serverless can now jump 16 capacity units in a second and grow up to 256 ACUs, helping AI apps handle sudden traffic spikes.

Oossa · 2026-09-30 · https://oossa.com/en/amazon-aurora-serverless-adds-16-acu-scaling-in-one-second

Produced and translated with AI assistance. Check the original sources below.

Amazon announced that Aurora serverless can now increase its capacity by up to 16 ACUs (Aurora Capacity Units) within a second and keep scaling up to 256 ACUs as demand grows. The change is on by default for clusters on platform version 3 or 4, and older clusters can upgrade to version 4 to get the benefit. The service still scales back to zero when idle, so you only pay for what you use.

## The facts

- Date: 2026-09-30 – "Wed Sep 30 2026 19:50:00 GMT+0200"
- Scaling increase: up to 16 ACUs in one second, up to 256 ACUs total

## Why it matters

Developers of agentic AI apps can handle sudden workload spikes without over‑provisioning, reducing cost and latency.

## Sources & references

1. [Amazon Aurora serverless now scales faster to support agentic AI and other bursty workloads](https://aws.amazon.com/about-aws/whats-new/2026/08/aurora-serverless-instant-16-acu-scaling/) – AWS, 2026-09-30

Last updated: 2026-09-30