When should you think about getting a CDC solution?

Hey everyone, I've been thinking a lot about how to keep data in sync between different services and databases without resorting to complex polling mechanisms. Change Data Capture (CDC) seems like a promising pattern for this. But I'm curious, at what point in a project's lifecycle, or what kind of data synchronization challenges, really make a strong case for adopting a CDC solution like Debezium or Maxwell's Daemon? When does it move from being an 'advanced' topic to a necessary one?