A customer lifecycle manager wants to trigger a post-purchase survey journey. It is critical that the journey starts within minutes of a customer completing a purchase. The purchase data arrives in real-time via streaming ingestion.
Which audience type should the manager have the team create?

A marketing automation specialist must urgently stop a live journey due to a critical error reported in its content.
What happens to the profiles that are currently paused inside a 'Wait' activity within that journey at the moment it is stopped?

A marketing specialist is configuring a welcome email and wants to display a personalized hero banner. They want to test three different banner images (A, B, and C) to determine which one drives the highest click-through rate, while also reserving 10% of the audience as a control group that will not receive any of the new images.
In the Campaign's content configuration, how should they set this up?

A bank's marketing team wants to orchestrate a customer onboarding process that involves multiple steps and systems. When a new account is opened, they want a journey to trigger. This single "Account Opened" signal, however, is a combination of two separate system events: "Application Approved" from the loan system and "Account Funded" from the core banking system.
Which Journey Optimizer event type should be designed to listen for this combined signal as a single journey trigger?

A marketing automation architect is designing a scalable content system. The architect needs a way to reuse complex personalization logic, such as an `if/else` statement that checks multiple profile attributes to display a specific greeting.
Which type of fragment should the architect use to create this reusable logic?