Every Business Runs on Three Functions. Which One Fits How You Think?

Open sketchbook with pencil illustrations and watercolor supplies on a dark wood crafting table with warm pendant lighting, representing the creative and strategic thinking behind the three business functions every business runs on

What do a photography business, a home bakery, a lawn care company, and an Etsy shop selling custom tumblers have in common?

On the surface, nothing. Different products. Different customers. Different skills. If you asked the photographer and the lawn care operator what they do for a living, you would get two answers that sound like they belong on different planets.

But underneath, every one of those businesses runs on the same three business functions. The last article armed you to see the fakes. This one shows you what is real. And once you see it, the question “what business should I start?” becomes a lot less important than the question that actually matters.


The Businesses People Actually Start

Military families start businesses all the time. Photography is the one everyone knows about. If you have been on more than one base, you have seen the spouse with the Canon and the Facebook page. It is practically a rite of passage. And there is nothing wrong with it. Those photographers are earning real money from a real skill. The question is not whether photography is a good business. The question is what is actually holding it together underneath.

Beyond photography: custom tumblers and crafts on Etsy. Cottage food baking. Pet sitting and dog walking. Tutoring. Thrift store flipping. Lawn care. Personal training. Real estate. These are not hypothetical. These are the businesses you see at every base, at every duty station, across every branch.

Some of them work well. Some fold within a year. The difference between those two outcomes has almost nothing to do with the business idea itself.


Three Business Functions and One Variable

Every business, from a home bakery to a landscaping company to a photography studio, operates on four elements: three business functions that stay constant plus one variable that changes.

Marketing. How people find you and decide to buy. Brand identity. Content. Organic reach. Paid ads. Word of mouth. The photographer needs this. The baker needs this. The lawn care operator needs this. Same function, different channels.

Accounting. How money works in the business. What comes in, what goes out, what it means. Pricing. Cash flow. Tax obligations. Every business has financial mechanics. Most small business owners ignore them until tax season becomes a crisis. A photographer booking 40 sessions a year at $50 each and thinking the business is doing well might be losing money on every session after expenses. Without someone tracking the numbers, there is no way to know.

Operations. How the business runs day to day without a staff of ten. Scheduling. Client management. Invoicing. Automation. The tech stack that lets one person do what used to require three. This is the function that determines whether a business is sustainable or whether it runs the owner into the ground.

Those three are the constants. They show up in every business, every industry, at every scale. They do not change when you pivot. They do not break when you PCS. They transfer.

Then there is the variable: Delivery. The actual thing you produce for the customer. The baker bakes. The photographer shoots. The tutor teaches. The lawn care operator mows. This is the part that changes when you change direction. Everything else stays.

Sometimes a photography business fails because the photos are bad. That happens. But plenty of talented photographers fail too, and it is not because of the camera work. It is because there was no marketing bringing in consistent clients, no one tracking whether the pricing even covered costs, and no operational structure that could survive a busy month without the owner working until midnight.

The business idea is the most replaceable part of the equation. The three business functions underneath it are not.

[CHART: chart-three-constants.png]


The Opportunity Most People Walk Right Past

Every business on that list above, the photographer, the baker, the lawn care company, the Etsy seller, the personal trainer, sells directly to individual people. A family hires the photographer. A neighbor buys the cake. A homeowner pays for the mow. That is called B2C: business to consumer. You make a thing or perform a service, and an individual person pays you for it.

That is the only model most people have ever considered. When someone says “start a business,” this is what they picture. Pick a skill, find customers, deliver the work. It is real. It works. But it is not the only game.

Here is what most people never see.

Every one of those B2C businesses needs all three business functions to operate. Marketing to be seen. Someone tracking the money. Systems that keep the operation running. And most of them are handling at least one of those functions badly. Many are handling all three badly.

The photographer who is pricing at $50 a session? She does not need another photography course. She needs someone to sit down with her numbers and show her what each session actually costs to deliver when you account for travel, editing time, equipment, insurance, and self-employment tax. At $50 a session, she is likely losing money on every shoot and does not know it. Cash changing hands feels like income. It is not. Not until you subtract what it cost to deliver. She needs a pricing strategy and someone to show her that gross revenue is not profit. That is accounting work.

The lawn care operator getting all clients from word of mouth? Does not need a bigger mower. Needs someone to set up a Google Business profile, run a basic local ad, and build a referral incentive. That is marketing.

The baker managing orders through text messages and losing track of who paid? Does not need better recipes. Needs someone to set up a simple booking and invoicing system. That is operations.

That is B2B. Business to business. Instead of selling to individual consumers, you sell to other businesses. You become the person behind the scenes who handles the functions they cannot handle themselves.

Different customer. Different relationship. Often more stable income because the work is recurring. The photographer does not need you once for a family portrait. The books need managing every single month. The lawn care operator does not need one ad. The marketing needs to run quarter after quarter. That is monthly revenue from clients who need you to keep showing up.

Most people never consider B2B because it is invisible. You see the photographer’s Instagram. You do not see who manages the books. You see the lawn care truck. You do not see who set up the scheduling software. The visible businesses get all the attention. The invisible infrastructure behind them is where the opportunity sits.


Which Function Fits How You Think?

You have been using one of these three business functions your entire life without calling it that. You already gravitate toward one of these. The work here is recognizing which one.

The Operations Mind

You like organizing messes. You see a broken process and your brain starts fixing it before anyone asked. You are good with systems, good with tools, and you get frustrated when things are inefficient.

That is the operations function. In business, it is tech stacks, automation, scheduling, client management, invoicing, and AI integration. The skill is making a one-person operation run like it has a team behind it. The business tools you can learn. The way your brain works is what you start with.

The Numbers Mind

You are good with numbers. Not just comfortable with them. You actually like knowing where the money is and what it is doing. Vague answers bother you. You want the actual figure.

That is the accounting function. The entry point is bookkeeping: categorizing transactions, reconciling accounts, keeping the books clean. Anyone can learn that in months. The escalation path is advisory: translating numbers into decisions. Telling a business owner which services make money and which ones cost more to deliver than they bring in. Bookkeeping is valuable on its own and it is where you start. Advisory is where it grows.

The photographer charging $50 a session? A bookkeeper can show the real cost to deliver each shoot. An advisor can restructure the pricing tiers, build a service menu with real margins, and show the unit economics that turn a busy calendar into an actually profitable business. Two levels of the same function, and there is room for both.

The Creative Mind

You are creative. Visually, with words, or both. You see patterns in how things are communicated and you notice when something is off. People tend to ask you to explain things because when you do, it lands.

That is the marketing function. It has two sides. The creative side is brand identity, visual design, content creation, storytelling. The analytical side is paid ads, data, conversion rates, testing what works and scaling it. Some people live on one side. Some live on both. The strongest marketing happens when a creative and an analyst partner up, which is another opportunity hiding inside a single function.

The baker does not know how to run an Instagram that brings in customers. The lawn care operator has never touched paid ads. The personal trainer has a great service and zero visibility. The business tools you can learn. The creative instinct is already yours.


AI Makes This Real, Not Hypothetical

After the last article, you might be wary of anyone mentioning AI and income in the same sentence. Fair. The guru space has turned “AI business” into the latest version of the same hype cycle this series exists to dismantle.

AI does not replace the foundational skill. If you do not understand bookkeeping, AI will not make you a bookkeeper. If you cannot write a coherent sentence, AI will not make you a content creator. The skill comes first. That part has not changed.

What AI does is remove the ceiling on what one person can deliver. A bookkeeper with AI tools processes transactions faster, catches anomalies that manual review misses, and generates reports in minutes that used to take hours. A marketer with AI tools produces content at a volume and consistency that used to require a team. An operations person with AI tools builds automations that would have required a developer five years ago.

There is a difference between someone who skips the foundation and uses AI as a shortcut and someone who builds real skills first and layers AI on top. You have seen the first version. It is the generic, soulless output that floods every platform. AI slop. That is what happens when someone with no marketing skill asks AI to “write me a month of social media posts.” The output looks like content and reads like nothing. No voice, no strategy, no understanding of the audience. Just words that fill a calendar.

The second version is different. A marketer who understands the audience uses AI to produce at a volume and consistency that used to require a team. The strategy is theirs. The voice is theirs. AI handles the repetitive production layers. The skill is the filter. AI is the accelerator. That combination compounds the same way consistent TSP contributions compound. Time plus real skill plus the right tools. The people who build that foundation now will be operating at a level in a few years that the people who skipped the skill cannot catch up to.

The gurus turned AI into a hype funnel. The actual opportunity is quieter and more durable: learn a real skill, use AI to deliver it better, and build something that gets stronger the longer you do it.


What Comes Next

You have seen the three business functions. You probably recognized yourself in one of them, maybe two. The next article turns that recognition into a plan.

The next article in this series is the model: learn the function, use it for your own business, sell it as a service to others. Three paths depending on where you are starting from. Real price points. Real client scenarios. The execution layer.


Figure It Out With People Who Get It

The Millionaire Veteran community is free. The Earn More framework lives there alongside the full Compass Method cash flow system. If you recognized yourself in one of those three functions, that is where the next conversation happens.

Joshua Breaux

About the Author

Joshua Breaux

Retired U.S. Marine
Financial Management Analyst
BS & MBA in Analytics


His family runs on the same systems he teaches here.

This content is educational and does not constitute personalized financial advice. Millionaire Veteran is not affiliated with the Thrift Savings Plan, FRTIB, or the U.S. Government. Past performance does not guarantee future results.