# Interactive session

A running EugoIDE instance attached to your workspace. It is where you write code; a cluster is what runs it at scale.

Source: https://university.eugo.io/glossary/interactive-session

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A session holds resources for as long as it is open, whether or not you are actively using it.

## Related terms

- [EugoIDE](https://university.eugo.io/glossary/eugoide) — The browser-based notebook environment where you write and run Python on Eugo. Built on JupyterLab, connected to compute in your workspace.
- [Workspace](https://university.eugo.io/glossary/workspace) — An isolated compute environment with its own persistent storage, preinstalled libraries, and resource allocation. Where your sessions and clusters run.
- [Cluster](https://university.eugo.io/glossary/cluster) — A set of machines, one head node and one or more compute nodes, launched together to run distributed work.