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](/docs/analytics/charts/funnel-analysis/faq) page. Use search to go directly to an answer.

{% card-grid columns="3" %}

{% card title="Billing and plans" description="Plus and Growth differences, the Startup Scholarship, renewals, and overage behavior." href="/docs/faq/billing-and-plans" /%}

{% card title="Access and SSO" description="Login errors, SAML certificate issues, and Google Workspace SSO troubleshooting." href="/docs/faq/access-and-sso" /%}

{% card title="Limits and quotas" description="Event volume limits, instrumentation maximums, chart limits, and CSV export caps." href="/docs/faq/limits-and-quotas" /%}

{% card title="Security and privacy" description="SOC 2, GDPR, the Customer Trust Portal, and the bug bounty program." href="/docs/faq/security-and-privacy" /%}

{% card title="Which API should I use" description="Choosing between HTTP V2, Batch Event Upload, SDKs, and source integrations." href="/docs/faq/api-choice" /%}

{% /card-grid %}

## More in this section

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