The second ingredient is correct ETL architecture and design.  When considerable effort is spent testing scenarios and proving out designs, valuable testing, implementation, and deployment time is lost.  This book fills that gap.  As a practical guide for Integration Services ETL development, you will learn ways to implement your ETL solution requirements from the data to the administration and everything in-between.  Each chapter begins with a review of pertinent ETL concepts and moves into working those out into a design with multiple examples and related Integration Services features.  Putting it all together to get a solution over the goal line requires knowing the big picture and coordinating all the pieces.  The book, in short: ETL soup to nuts with Integration Services.