Which Braze feature expands marketing personalization through Connected Content?

The feature that expands marketing personalization through Connected Content is Content Cards. These customizable content modules allow for the integration of dynamic content into messages based on user behavior and preferences, enabling marketers to deliver tailored experiences. Content Cards can pull in real-time data and connect to various external APIs, allowing for a more personalized approach to customer interactions.

Alloys is a platform providing integration capabilities, but its primary function is not focused on directly enhancing personalization through content. Braze Events are used to track user interactions and behaviors but do not inherently personalize content. Braze Conversations is a tool for managing communication with users but does not specifically relate to the dynamic personalization that Content Cards provide.

Thus, for effective marketing personalization leveraging Connected Content, Content Cards are the appropriate feature.