A good UTM system uses a small set of predictable fields, clear naming rules and a format the team can follow without asking for permission every time. The aim is not more tags. It is cleaner attribution data.
A useful project estimate separates the work into measurable cost categories, states the scope, records assumptions and keeps contingency visible. The number should be easy for another person to review without starting the estimate again.
Salary is one part of total employee cost. Depending on the role and business, the full model can include employer payroll costs, benefits, equipment, software, recruiting, onboarding, training, management time and workplace costs.
Economic order quantity focuses on the order size that balances ordering and holding costs under the model assumptions. Reorder point focuses on when to order based on usage, lead time and safety stock. One answers “how much?” and the other answers “when?”.
Cash conversion cycle is commonly expressed as DIO + DSO − DPO. It shows how long cash can remain tied up between purchasing or producing inventory and collecting customer cash, after considering supplier payment timing.
The Rule of 40 commonly adds a company’s growth rate and profit margin to create a simple operating metric. The useful part is the trade-off view: stronger growth can offset lower current profitability and vice versa. The exact growth and margin definitions must be stated.
Markup is profit measured against cost. Margin is profit measured against selling price. They are related but not interchangeable, so a 30% markup does not produce a 30% margin.
ROAS is revenue attributed to advertising divided by advertising spend. It does not directly measure profit because it does not include product cost, fulfillment, payroll, platform fees or other expenses unless those are built into a separate model.
Customer acquisition cost is usually calculated by dividing acquisition spend by the number of new customers acquired in the same period and scope. The difficult part is defining both the spend and the customer count consistently.
The interest rate affects the financing cost, but the total cost of a business loan also depends on the principal, term, fees, repayment structure and timing. Use the rate as one input, not the complete comparison.
Tell us what you are trying to build, what problem you are solving and where the digital part becomes difficult. Martzine is built around that gap. Start with the outcome and the constraint, then work back to the right digital layer.
