Dual Run documentation

Read product documentation

Dual Run lets you simultaneously run workloads on your existing mainframes and on Google Cloud, and compare their behavior, allowing you to perform real-time testing and quickly gather data on performance and stability.

Get started for free

Start your proof of concept with $300 in free credit

Develop with our latest Generative AI models and tools.
Get free usage of 20+ popular products, including Compute Engine and AI APIs.
No automatic charges, no commitment.

View free product offers

Keep exploring with 20+ always-free products.

Access 20+ free products for common use cases, including AI APIs, VMs, data warehouses, and more.

Documentation resources

Find quickstarts and guides, review key references, and get help with common issues.

emoji_objects

Discover

format_list_numbered

Guides

Get started

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2026-07-21 UTC.