Event driven is a new way to process and ingest the data. Serverless is a new paradigm to abstract the technical layer and to focus on what matter: the business processes.
Both combined, you can create powerful and scalable data pipelineon Google Cloud. You can react to event, trigger the next step with ease and just in time.

The reality isn't so nice, and it quickly becomes a nightmare to understand and to update the pipelines. Workflows is a new product on Google Cloud that orchestrates the processes.
Come to discover what was the serverless data pipelines before and how it's smoother with Workflow!