# FAQ

> For AI agents: a documentation index is available at [/docs/llms.txt](/docs/llms.txt). Append `.md` to any page URL for markdown, or send `Accept: text/markdown`.

This hub covers account-level questions about Amplitude: plans and billing, access and SSO, security and privacy, ingestion limits, and which API to use.

Questions about a specific feature live with that feature. For example, funnel-chart questions are at the bottom of the [Funnel Analysis](https://amplitude.com/docs/analytics/charts/funnel-analysis/faq) page. Use search to go directly to an answer.

### [Billing and plans](https://amplitude.com/docs/faq/billing-and-plans)

Plus and Growth differences, the Startup Scholarship, renewals, and overage behavior.

### [Access and SSO](https://amplitude.com/docs/faq/access-and-sso)

Login errors, SAML certificate issues, and Google Workspace SSO troubleshooting.

### [Limits and quotas](https://amplitude.com/docs/faq/limits-and-quotas)

Event volume limits, instrumentation maximums, chart limits, and CSV export caps.

### [Security and privacy](https://amplitude.com/docs/faq/security-and-privacy)

SOC 2, GDPR, the Customer Trust Portal, and the bug bounty program.

### [Which API should I use](https://amplitude.com/docs/faq/api-choice)

Choosing between HTTP V2, Batch Event Upload, SDKs, and source integrations.

## More in this section

- [Billing and plans](https://amplitude.com/docs/faq/billing-and-plans).
- [Access and SSO](https://amplitude.com/docs/faq/access-and-sso).
- [Limits and quotas](https://amplitude.com/docs/faq/limits-and-quotas).
- [Security and privacy](https://amplitude.com/docs/faq/security-and-privacy).
- [Which API should I use](https://amplitude.com/docs/faq/api-choice).