What are the Best CDP Apps for SaaS Businesses?

I want to start a discussion focused on customer data platforms (CDPs) that work well for SaaS companies. With customer behaviour happening across so many channels, it’s important to have a CDP that doesn’t just collect data, but helps activate it meaningfully across the funnel.

These are some of the top-rated CDP solutions listed on G2’s Customer Data Platform category:

• Insider: Designed for personalized customer journeys across channels like web, app, email, and push. How intuitive is the segmentation engine when used by non-technical teams?
• Bloomreach: Combines CDP with marketing automation and product discovery. Does it offer enough flexibility for scaling personalization without complex setup?
• WebEngage: Popular among B2C and SaaS brands for lifecycle marketing. Curious if the journey builder is robust enough for SaaS-specific use cases like trial-to-paid conversions.
• Dotdigital: Known for marketing automation rooted in CDP features. Anyone using this in a multi-brand SaaS environment—does it support layered audience strategies?
• FullStory: Geared more toward behavioral insights and session analytics. Can it function as a standalone CDP or does it work best when paired with another data platform?

If you’ve used any of these to power customer insights or drive engagement in a SaaS business, I’d love to hear how they perform at scale and where they shine (or fall short).