
CleverTap built its customer-engagement business around a useful idea: behavior should shape the next message. Its evolution shows what marketers can steal from a platform designed to connect analytics, decisions and delivery.

Doxim, Intense Technologies, Infobip and Templafy don't make headlines, but they quietly decide how your bank, insurer and phone company talk to you - and the market for that plumbing is racing past $2 billion.