Why do I need Data 360 if I already have Marketing Cloud Engagement (MCE)?

Salesforce Data 360 easily handles complex, multi-channel data unification and segmentation, allowing MCE to function purely as a downstream campaign delivery engine. For example, large, nested JSON datasets in MCE require computationally expensive SQL parsing that scales poorly within MCE. To circumvent MCE's SQL processing limits, use Data 360’s Calculated Insights to pre-flatten complex nested JSON structures into distinct, individual-level fields (e.g., email_opt_in_brand_x) prior to activation.

For more, check out:

• https://www.salesforceben.com/what-does-data-cloud-have-that-marketing-cloud-engagement-doesnt/
• https://salesforce.stackexchange.com/questions/438689/activating-large-datasets-from-data-cloud-to-marketing-cloud-engagement-without