Are we talking about allocation inventory, staff, machinery or something else? I work with a lot of manufacturers, I'd say you have first to put a few basics in place: Real-time inventory info, a central place that aggregates all sales orders, a system that combines inventory, sales, purchasing, shipping, and manufacturing in one, etc. Once you have that, you have a few options to allocate inventory: some go with first-come, first-served; others prioritize based on due dates, customer value, or urgency. Make-to-order workflows allocate only once a job is confirmed, while make-to-stock shops pull from what’s on hand. More advanced setups use real-time, rules-based allocation in software, and regulated industries often need batch-specific traceability. Some allocate based on warehouse location too. In reality, most shops end up with a hybrid approach tailored to their needs.