Which customer journey orchestration platforms are known for real-time event handling and scalable high-volume messaging?

Platforms commonly recognized for real-time event handling and high-volume, scalable messaging in customer journey orchestration include:

• Braze — strong in real-time, event-triggered messaging across mobile, email, push, in-app, and more.
• Adobe Journey Optimizer — built for real-time customer journey orchestration with enterprise-scale event processing.
• Salesforce Marketing Cloud Personalization / Journey Builder — supports event-driven journeys and large-scale messaging, especially in Salesforce-centric stacks.
• Iterable — known for real-time behavioral triggers and scalable cross-channel campaign orchestration.
• MoEngage — strong in real-time customer engagement and multi-channel messaging at scale.
• CleverTap — widely used for real-time analytics plus event-driven messaging and retention journeys.
• Oracle Responsys / Oracle CX — enterprise-grade journey orchestration with scalable messaging infrastructure.
• SAP Emarsys — supports real-time triggers and large-volume omnichannel campaigns.
• mParticle + downstream messaging tools — not a journey tool by itself, but often used as a real-time event hub feeding scalable orchestration platforms.
• Klaviyo — particularly strong for real-time event-based messaging in e-commerce, with scalable automation.

If you want, I can also give you:

1. a shortlist by enterprise vs mid-market,
2. a comparison table of event latency / throughput / channels, or
3. recommendations based on your stack (B2C, B2B, e-commerce, app-first, etc.).