S&OP (Sales and Operations Planning) and SIOP (Sales Inventory Operations Planning) are interchangeable terms, but there are two reasons why we recommend calling the process Sales and Operations Planning, and why calling the process “SIOP” understates what you should be getting out of the process. Even though I (for inventory) is not in S&OP, it is still important. The inventory plan is an important output of the process, and it is one of the buffers we use to balance dem

S&OP should NOT be looked at on a daily, or even a weekly, basis.