> ## Documentation Index
> Fetch the complete documentation index at: https://docs.domino.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Validated Spark version

For each minor release (for example, Domino 4.4 or 4.5), Domino performs a set of validation tests against the **most recently released version** of Apache Spark. The purpose of the tests is to cover the integration surface between the Domino platform and the on-demand Spark clusters that the platform orchestrates. The testing is not intended to be a comprehensive test of Spark, as Domino does not modify that software.

See the [release notes](/release-notes/overview) for more information on the validated framework for each Domino version.