Janet needs to assign a very important advertising account to one of her preparers. First she reviewed each preparers work load, then she studied the sales data of the products for the last three campaigns of each preparer, then she reviewed each preparer's annual review to familiarize herself with their goals. Finally, she gave the account to Paula, a very creative, efficient preparer who has had high sales results with her last three clients' products. What is Janet's management style is based on?