# Funnels

One of the challenges of targeting customers with relevant campaigns is understanding where they are in their customer journey. Many organizations use the traditional marketing funnel to understand where their customers are in the buying process. Knowing where customers are in the marketing funnel allows organizations to create campaigns and analyze customer behaviors that are specific to individual customers or customer groups. Being able to use all available customer data to accurately identify exactly in which stage customers are in gives marketers a clear advantage. <br> <br> Treasure Data offers Funnels, a premium subscription feature in Audience Studio, which provides this advantage to its users. Funnels make it easier for marketers to see exactly where their customers are in the buying process, allowing them to create more customer-tailored marketing campaigns using multi-channel activations.<br> <br> Funnels enables marketers to create and customize a marketing funnel with up to eight stages in the Audience Studio to reflect the exact buying experience of their customers. After the Funnel stages have been created, marketers can further analyze and refine the stages and activate specific stages for campaigns.

 - [GET /audiences/{audienceId}/funnels](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_index.md): Retrieves a list of funnels associated with a parent segment identifier and its stages.
 - [POST /audiences/{audienceId}/funnels](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_create.md): Create a new funnel, assign it a name and description matching your business needs. <br> <br> <br> *This endpoint is for Audience Studio legacy. For the latest Audience Studio, contact your Customer S
 - [GET /audiences/{audienceId}/funnels/{funnelId}](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_show.md): Search and find a specific funnel by its identifier. <br> <br> <br>
 - [PUT /audiences/{audienceId}/funnels/{funnelId}](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_update.md): Update a funnel. <br> <br> <br> *This endpoint is for Audience Studio legacy. For the latest Audience Studio, contact your Customer Success Representative.*
 - [DELETE /audiences/{audienceId}/funnels/{funnelId}](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_delete.md): Delete a funnel. <br> <br> <br> *This endpoint is for Audience Studio legacy. For the latest Audience Studio, contact your Customer Success Representative.*
 - [POST /audiences/{audienceId}/funnels/{funnelId}/clone](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_clone.md): Make a copy of a funnel.
 - [GET /audiences/{audienceId}/funnels/{funnelId}/statistics](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/funnels_statistics.md): Retrieve the population history of a funnel. The history is returned per day and those days are calculated in the timezone of the audience.
 - [POST /entities/funnels](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/paths/~1entities~1funnels/post.md): Create a funnel.
 - [GET /entities/funnels/{id}](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/paths/~1entities~1funnels~1%7Bid%7D/get.md): Retrieve a funnel by ID.
 - [PATCH /entities/funnels/{id}](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/paths/~1entities~1funnels~1%7Bid%7D/patch.md): Update a funnel.
 - [DELETE /entities/funnels/{id}](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/paths/~1entities~1funnels~1%7Bid%7D/delete.md): Delete a funnel.
 - [GET /entities/funnels/{funnelId}/stages/{id}/statistics](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/paths/~1entities~1funnels~1%7Bfunnelid%7D~1stages~1%7Bid%7D~1statistics/get.md): Retrieve the population history of the audience. The history is returned per day and those days are calculated in the timezone of the audience.
 - [GET /entities/parent_segments/{parentSegmentId}/funnels](https://docs.treasure.ai/ja/apis/td_cdp_api-public/funnels/paths/~1entities~1parent_segments~1%7Bparentsegmentid%7D~1funnels/get.md): Retrieve a list of funnels based on a parent segment.