What a consulting engagement actually produces
The output is a document you can act on, not a slide deck of principles. A typical engagement ends with an architecture map of the current state, a requirements list ranked by business value, two or three options with cost ranges, and a recommended path with a phased plan. Every number carries its assumption, so your finance lead can challenge it.
We interview the people who use the system as well as the people who own it. The gap between the two is usually where the real requirements sit. We also read the code and the infrastructure configuration where access is allowed, because a diagram drawn from memory rarely matches production.
Most reviews take two to four weeks. A due diligence on a single product is closer to two. A multi-system landscape with several vendors can reach six to eight weeks, and we say so at the start rather than stretching the work.
