ContextHub and Store Types in AEM:

ContextHub UI Module: Manages the user interface components.

Custom Session Store Candidate: Stores data for the duration of a session.

Custom Persisted Store Candidate: Stores data across sessions.

Custom JSONP Store Candidate: Integrates external data sources, typically JSON-based, for dynamic content targeting.

Requirement Analysis:

The need is to extend ContextHub by adding an API to target banners based on CRM data for the current visit.

Solution Explanation:

Custom JSONP Store Candidate: This store type allows the integration of external data sources via JSONP, enabling the targeting of banners based on CRM data. It is suitable for dynamic, real-time data integration, which is essential for personalized marketing.

References:

Adobe Experience Manager ContextHub documentation provides guidance on creating and integrating custom stores to extend ContextHub functionality for specific use cases like CRM data integration.