> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Tenants

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Tenants allow you to structure your customers in Plain in the same way as they are structured in your product.

For example if within your product customers are organised in a 'team' then you would create one tenant per team in your product. A tenant has an `externalId` so that you can map it back to an entity in your database.

Customers can belong to multiple tenants.

For advanced integrations with Plain you can specify a tenant when creating a thread. This is useful when building a support portal in your product as it allows you to fetch threads specific to a team in your product.

Additionally [tiers and SLAs](https://plain.support.site/article/tiers) can be associated with a tenant.

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