# Billing & plans

Pricing tiers, usage tracking, and keeping spend predictable.

Source: https://university.eugo.io/topics/billing-plans

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## Courses

- [Workspaces & organizations](https://university.eugo.io/courses/workspaces-and-organizations.md): Set up an organization, invite people, allocate compute, and keep spend predictable.

## Videos

- [Sizing a cluster for your workload](https://university.eugo.io/videos/sizing-a-cluster.md): Estimating worker count from the shape of your work, rather than guessing.
- [Reading the dashboard](https://university.eugo.io/videos/reading-the-dashboard.md): What each panel on the organization dashboard is telling you, and what to watch.

## Checklists and guides

- [Cost optimization checklist](https://university.eugo.io/resources/cost-optimization-checklist.md): Keep compute spend predictable without giving up throughput: what to check weekly, how to stop paying for idle clusters, and where to right-size.
- [Quick guide: workspace admin](https://university.eugo.io/resources/quick-guide-workspace-admin.md): Setup order, member roles, and the two numbers worth watching weekly: usage against plan limits, and clusters still running after their work finished.
- [Quick guide: org owner](https://university.eugo.io/resources/quick-guide-org-owner.md): Plans, accountability, and the questions worth asking monthly: who is spending what, which limits are close, and whether access still matches the team.

## Vocabulary

- **HPC as a service (HPCaaS)** — High-performance computing consumed on demand rather than owned: request compute for one run, stop paying when it ends. No hardware, no scheduler to run.
- **Billing period** — The interval over which an organization’s compute usage is accumulated and charged.
- **Organization** — The top-level account that owns one or more workspaces and is the unit of billing. Members belong to an organization and hold roles within it.
- **Pricing plan** — The tier assigned to a workspace, which governs its resource limits and concurrency: how much can run, and how much can run at once.
- **Usage** — Accumulated compute consumed by an organization in a billing period, shown against plan limits on the dashboard.
- **Idle cluster** — A cluster still running after its work finished. It bills at the full rate, and is the largest avoidable cost for most organizations.