# Campaigns

A campaign is an object grouping five main components:

* Billing information
* Budget
* Diffusion settings
* Audiences
* Creatives

## Billing information

See [the specific billing page](/billing)

## Budget

In the budget section, you can set:

* A price per *unit*, which can be a CPFUA (*cost per first user action*) or a CPM (*cost per mille*)
* A maximum daily budget
* A maximum total budget (optional)
* For view campaigns, the price per *unit* is replaced by the price pack feature. This will allow you to buy inventory with the relevant price for each publisher type. See the [pricing page](/pricing) for more information

## Diffusion settings

* Location
* User browser language
* Diffusion start and end
* Target device types
* Diffusion days and hours
* Capping

## Audiences

See [the specific audience page](/audiences)

## Creatives

See [the formats you can use](/formats)

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**Documents**

- [AdServing Campaigns](https://outline.collectiveaudience.co/s/public/doc/adserving-campaigns-gNeHJFuGkB)
- [Campaign billing](https://outline.collectiveaudience.co/s/public/doc/campaign-billing-qKaV6ADjMf)
- [Customers](https://outline.collectiveaudience.co/s/public/doc/customers-Pz0cRbVNg8)
- [Pricing](https://outline.collectiveaudience.co/s/public/doc/pricing-LQWYU2pvPD)