Everything worth knowing, nothing that isn't.
CEP vs CPaaS
A CPaaS exposes messaging channels as developer APIs; a CEP layers marketing and lifecycle tooling — audiences, journeys, triggers, analytics — on top. Many stacks combine a CPaaS for delivery with engagement logic above it. See /answers/what-is-cpaas and /answers/what-is-omnichannel-orchestration.
What it adds
Segmentation, automated journeys, personalization, A/B testing, and cross-channel analytics — turning raw messaging into coordinated engagement programs. See /answers/sms-marketing-best-practices.
The delivery still matters
No engagement tooling helps if messages do not arrive; a CEP is only as good as the route quality and deliverability beneath it. See /answers/how-to-choose-sms-provider and /products/omnichannel.