Klaviyo says legacy martech loses ground with B2C enterprises as stack complexity slows marketing execution
KVYO•Klaviyo says complex legacy marketing platforms are slowing execution and weakening ROI measurement as B2C enterprises face more fragmented consumer behavior. Gartner put martech utilization at 49% in 2025, down from 56% in 2024.
1. Marketing stack challenges
Klaviyo said legacy marketing platforms are losing effectiveness as stack complexity fragments customer data, delays decisions and slows deployment. It cited Gartner figures showing martech utilization fell to 49% in 2025 from 56% in 2024, with stack complexity the top obstacle.
