# Portal

URL: /products/site/portal · Id: `page:products/site/portal`

> A Portal is where a signed-in Customer sees their plan, invoices, usage, keys and support threads, on your Domain.

A [Portal](/business/nouns/portal) is where a signed-in [Customer](/business/nouns/customer) sees their plan, invoices, usage and support threads. Each [Persona](/business/nouns/persona) gets its own, served at `/portal` on your [Domain](/business/nouns/domain).

## What you get
- 1 sign-in by passkey, email link or single sign-on (Tenant)
- 1 plan change, card update and cancel (Stripe's Customer Portal Session)
- 1 invoices and receipts to download (Stripe's Invoice)
- 1 usage against the plan (Entitlement)
- 1 API keys and request log, when an Offer sells keys (Interface)
- 1 support threads with your team and agents (Conversation)

## Guides
- [Let customers sign in](/products/app/let-customers-sign-in)
- [Ship an API](/products/api/ship-an-api)

## How it works
- [Billing portal](/systems/finance/billing-portal): the billing section at `/portal/billing`.
- [Customer apps](/products/site/customer-apps): every Portal beside the [Site](/business/nouns/site) and [App](/business/nouns/app).