wdops is a Snowflake Native App. It runs inside your Snowflake account, keeps its tables in its own schema and reaches exactly one host: your Workday tenant, through a network rule and an external access integration you create. Credentials live in a Snowflake secret you own. The vendor has no access to your data, your credentials or your connection, and nothing is sent anywhere else.
Two application roles separate the engineers from everyone else. Within the app, entitlements say which companies a user may submit for and see. Every request and response is kept per record, redacted of credentials, for as long as you choose.