How to Handle Schema Drift When Syncing SaaS APIs to Your Data Warehouse

If you are responsible for syncing third-party SaaS data into your company’s data warehouse, you already know the pain. You’ve probably been paged at 2 AM because an administrator at your largest enterprise customer renamed a custom field in their Salesforce instance from Annual_Revenue__c to ARR__c, or a vendor “helpfully” changed a status field from an integer to a string. The upstream API dutifully returned the new schema. Your extraction tool dutifully loaded it. And your downstream transformation models violently broke. Three executive dashboards are now completely blank.