The Four Bottlenecks
Every business is limited by one of four things at a time: the offer, marketing, sales, or delivery. Improving any of the other three makes you busier and no richer, which is why most effort changes nothing.
How to run it
- Test the offer — Do people who understand it buy it? If they listen politely and pass, stop here.
- Test marketing — Does enough of the right audience know you exist? Good conversion with low volume points here.
- Test sales — Do conversations become contracts? Plenty of interest with few closes points here.
- Test delivery — Can you produce it profitably and repeatably? Being full, late or low-margin points here.
- Fix only the first failure — Then re-run the test, because the constraint will have moved.
Every business is limited by one of four things at any moment: the offer, marketing, sales, or delivery. Only one is binding. Work on the other three and you get busier without getting richer.
The four
Offer. What you sell, to whom, at what price. Broken when people listen politely and do not buy, and when you cannot explain what you do in a sentence they repeat. See positioning.
Marketing. Whether enough of the right people know you exist. Broken when the offer converts well and almost nobody sees it.
Sales. Turning interest into signatures. Broken when plenty of conversations happen and few close, or when deals stall after the proposal.
Delivery. Producing the outcome profitably and repeatably. Broken when you are full, late, or losing margin on every job. See gross margin.
Finding the binding one
Follow the numbers in order and stop at the first that fails.
- People hear the offer and do not buy → offer.
- The offer converts and volume is low → marketing.
- Volume is fine and conversion is low → sales.
- Everything converts and you cannot take more work, or margin is falling → delivery.
The sequence matters because a downstream fix cannot repair an upstream break. More traffic to a bad offer produces more people declining it faster, and it costs money to do.
The trap
You will work on the bottleneck you enjoy. Technical founders rebuild delivery; marketers run campaigns; nobody voluntarily fixes the offer, because changing it means admitting the current one is wrong and turning down work.
The constraint moves once you fix it, so this is a loop rather than a project. Fix delivery and you can take more work, which makes marketing the constraint. See the bottleneck.
Questions
What are the four bottlenecks in a business?
Offer, marketing, sales and delivery. Only one limits the business at a time, and improving the other three produces activity without additional profit.
How do you find your bottleneck?
Test in order. If people who understand the offer do not buy, it is the offer. Good conversion with low volume is marketing. High volume with low close rate is sales. Being full or unprofitable is delivery.
Why can't you fix a bottleneck out of order?
Because downstream fixes cannot repair upstream breaks. Driving more traffic to an offer that does not convert produces more rejections at a higher cost.