One of the fundamental factors determining the success of your business is your process, specifically how effective it is.
Of course, you know how to run your business - it's what you do. Acme is not going to tell you what you already know. Acme is the objective observer who will look at how the pieces work starting from a bird's eye perspective and systematically reveal all the details that make up your product or service cycle.
The most common example is where a business is run by its founder who runs things according to their instincts - they just know how it works. This is typically difficult to reproduce and scale which places limits on the potential of the business. Acme helps by creating a clear image of how things work including the details which are not part of the product or service itself.
Most often, the core competency of the founder is the competitive advantage and some operational detail is the limiting factor! Once this is identified and managed, growth follows. This is process development and improvement.