One of Sift Science's most powerful features is the ability to setup automation. After your fraud team has used Sift Science for a few weeks and have provided plenty of feedback (via our Labels API and Decisions API - see Giving User Feedback with Sift for more details) your team can begin to think about automation via Workflows.
For example - if your team knows that any Sift Score about 90 is definitely fraud - logic can be setup to automatically block these users from completing any transactions on your website. This is a business decision to be made by your team!
You can also use Formulas to set up this automation. Formulas lets you leverage Sift Scores and any other data you send us to take automated Actions like Reject, Accept, or Hold Order.