> For the complete documentation index, see [llms.txt](https://docs.goodfit.io/goodfit-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.goodfit.io/goodfit-docs/product/segments.md).

# Segments

<figure><img src="https://1640582697-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMPh5iOobj4telctyJWpa%2Fuploads%2FOU2KrUtMSgtSPAPram1U%2Fimage.png?alt=media&amp;token=6b7054b9-b083-47eb-aae6-b15a3d7381a2" alt=""><figcaption></figcaption></figure>

Segments allow you to organise your companies into lists and enrich them with accurate & relevant contacts. You can use segments to launch any go to market motion.

The most common use cases we’ve seen for segments so far are:

#### 🤖 Programmatic Outbound

Segments can be used to create a list of companies & contacts to enrol into an automated email campaign.

For any successful campaign, it is important to get the underlying data right, as there’s no human in the loop to validate it.

Segments help you identify the right companies that should be considered part of the audience, as well as enrich those companies with relevant contacts, including their contact details.

#### 📗 Book Building

Segments can also be used to build a list of companies & contacts to be distributed to your sales team.

You can use segments to create [tiers](/goodfit-docs/guides/segmentation/tiering.md) (using [scoring](/goodfit-docs/product/scoring-analysis.md)) and further sub-segment them into territories if you have those in place.

Finally, you can enrich every single one of those companies with the relevant [contacts](/goodfit-docs/guides/segmentation/personas-introduction.md) (including their email & phone number) — saving your sales team time on manual prospecting and ensuring that all your sales reps are targeting the best personas.

#### 🎯 Ad Campaigns

You can use segments to create audiences for your ads campaigns. Instead of relying on LinkedIn target audience filters (which are often very generic), you can optimise your spend and run ads at the highest-fit list of companies & contacts.

You can export the segments using native LinkedIn Ads format to ensure the highest match rates.

To see how to use segments for all these different use cases, see our [video guides](/goodfit-docs/guides/segmentation/segments-introduction.md)!<br>