A generic process model is a starting point nobody starts from.
Every IFS program reaches the same moment: somebody says “that is not how we do it in our industry,” and they are right. It usually happens late, in a design workshop, and the work then happens anyway at the highest possible cost and with the least possible evidence. ModelIFS carries sector differences as variants of the standard model, so industry requirements are reviewed at design rather than discovered at UAT.
What a sector-blind model makes you pay for twice
None of this is exotic. It is the ordinary arithmetic of discovering an industry requirement late.
Discovery time you already spent
Rework, not configuration
Requirements nobody raised
Variants of one process, not sixteen libraries
This is the design decision that makes the whole thing maintainable, and it is worth explaining because the obvious alternative fails slowly.
The obvious way, and why not
Copy the library once per industry and edit each copy. It works for about a year. Then a fix to a core process has to be applied 18 times, someone misses one, and the copies drift until nobody can say which is right. A library that disagrees with itself is worse than no library.
One process, many variants
535 standard processes carry 2,237 variants between them. A variant is attached to the process it changes and says what differs and for which sector. Alongside them sit 330 processes that exist only in an industry, because some things genuinely have no generic equivalent. Fix the core once and every sector gets the fix.
Industry models with the most content
Depth varies by sector. These are the verticals with the most content behind them, with the next set defined and in progress.
If your sector is not on the list
The standard model applies to you in full: 535 processes with everything defined. The variant layer is built as part of the engagement and becomes part of the model, so your next upgrade and the next operator in your sector both inherit it.
Defined and not yet written: Field Service · Manufacturing · Aviation · Robotic Support Services
Your industry, on day one.
Where the variant work is done, you start from it. Where it is not, it is built once and maintained in the model.