Scenario: You receive terabytes of customer behavioral data daily from Google Analytics into BigQuery. Your customers' information is stored in a Cloud SQL for MySQL database, and the CRM database resides in a Cloud SQL for PostgreSQL instance. The marketing team wants to create marketing campaigns for yearly active customers using data from these two databases and the behavioral data in BigQuery. The campaigns will run over 100 times daily and up to 300 times during sales, while minimizing the load on the Cloud SQL databases. Question: What should you do to meet these requirements?