When you allow third parties and their service providers to collect your financial data, it's called "account aggregation". 

When you enroll in their service, you're redirected to a U.S. Bank login screen to enter your login details. By authenticating your identity with us (U.S. Bank), it lets you share your information without disclosing your login details to the third party. 

See, How do I control my financial data shared with third-party applications?