Help: Treasure Data x Braze: how do you perform segmentation?

Hello Braze Community,

We are onboarding Braze and connecting it with Treasure Data, our CDP. Our team is trying to figure out the best way to perform segmentation that will leverage CDP's segmentation capability while allowing CRM to be agile for journey orchestration and optimisation.  

The team has decided to adopt a hybrid setup, meaning the segmentation is not exclusively done in one platform or the other. But we're debating between two approaches.

1. Create a few child segments under one parent segment in CDP. Push the child segments to Braze and use them to build sub-segments in Braze for different Canvases and Campaigns. One sub-segment is not necessarily tied to one Canvas/Campaign exclusively. The child segment contains a large group of customers who may qualify for more than one user journey. 

2. Create one segment tied to one Canvas/Campaign and push it to Braze. Then, build a segment in Braze using the logic custom attribute is td_segment_id = campaign_name or canvas_name and append it to one Canvas/Campaign. In this case, all segments in Braze are pre-generated in TD based on use cases.  

I'm looking to understand the pros and cons in both setups and would love to hear how you and your team balance the relationship between CDP and Braze when segmenting audiences. 

Thank you!