Hire a head of ecommerce when people already come to the store and the problem is what happens after they arrive: the site, the catalog, stock, fulfillment, marketplaces and conversion. Hire a marketing leader when the store works but not enough of the right people arrive, or each new customer costs more than they are worth. The quickest test is to ask whether doubling traffic tomorrow would double profit. If it would, you need a marketing leader. If it would break the operation or simply lose more visitors, you need ecommerce leadership first.
In a store doing a few million a year, the founder usually runs both jobs. They pick products, approve ad spend, answer the agency, fix the checkout and chase the warehouse. When it gets too much, they post a job for "head of ecommerce" or "head of growth" and hope one person can take all of it.
That rarely works, because the two jobs pull in different directions. Ecommerce leadership is about the store running well: merchandising, site speed, product pages, inventory, shipping, returns, marketplaces like Amazon, and the conversion rate of the traffic you already have. Marketing leadership is about demand: who the customer is, why they should pick you, which channels bring them in at a cost the margin can carry, and how to get them to buy again. In 15 years leading marketing and operations, I have seen good people fail in both roles simply because they were hired to fix the other one.
Pull the last 90 days of numbers and look at where the business is leaking. These signals point one way or the other.
| Signal | Points to a head of ecommerce | Points to a marketing leader |
|---|---|---|
| Traffic | Steady or growing, but sales do not follow | Flat or falling, or only moves when ad spend moves |
| Conversion | Visitors reach product pages and drop at cart or checkout | Conversion is fine for visitors who arrive with intent |
| Operations | Stockouts, slow shipping, refund and review problems | The operation could handle much more volume |
| Customer cost | Acceptable when the site converts well | Rising every quarter, and new channels never pay back |
| Repeat buyers | Customers come back but hit the same site issues | Most customers buy once and are never heard from again |
| Who owns the brand story | Clear, the store just does not deliver on it | Nobody can say in one sentence why a customer should choose you |
Many brands score a mix, which is normal. Count where the money is actually lost. If you spend heavily on ads and lose most visitors at checkout, fix the store before you buy more traffic. If the store converts well but each customer costs more than their first order earns and they never return, the problem is demand and retention, which is marketing work.
The expensive pattern is hiring a strong ecommerce operator and asking them to grow revenue through paid ads. They tidy the site, add apps and launch promotions, and sales go up a little while margin goes down, because discounts and ad spend are doing the work. Nobody has decided who the brand is for or how it will keep customers, so every month starts from zero.
The reverse happens too. A marketing leader builds demand, traffic climbs, and the store cannot keep up: products sell out, delivery slips, reviews turn negative and the extra customers do not come back. If your operation is already stretched, more demand makes the problem bigger, not smaller.
Map one month of visitors from arrival to purchase to second purchase. Note the drop at each step: landing page, product page, cart, checkout, delivery, repeat order. The step with the biggest loss in money, not percentage, is your first priority.
Take the profit on a first order after product cost, shipping and payment fees, then add what an average customer spends in repeat orders over a year. Compare it with what you pay to acquire one. If the cost is higher than the first order profit and repeat buying is weak, you have a marketing and retention problem regardless of how good the site is.
On the store side, fix the single worst step you found in week 1, such as a slow mobile checkout or a confusing shipping message. On the marketing side, set up one simple repeat purchase program for existing customers, such as a well timed email after delivery. Watch which change moves profit more.
Write down the three numbers the new person must move in their first six months. If they are conversion rate, delivery time and stock availability, you are hiring ecommerce leadership. If they are customer cost, repeat purchase rate and the share of revenue from new customers, you are hiring a marketing leader. If it is both, decide which comes first and hire for that.
A senior full-time marketing executive is a large commitment; a full-time CMO typically costs $280,000 to $450,000 a year before benefits, and a senior head of ecommerce is a significant salary too. Many growing brands are better served by part-time senior leadership while they work out which seat matters most. My fractional CMO engagements run $2,500 to $50,000 a month, most between $8,000 and $15,000, month to month with no long contract. The details are on my fractional CMO cost page, and my fractional CMO for ecommerce page explains how that work is set up for online brands.
Get help when you have run ads for a year and still cannot say what a customer is worth, when every growth push ends in discounts, or when you are about to hire and cannot write the three numbers the person must move. A fractional CMO can own the demand side, tell you plainly whether the store or the marketing is the bottleneck, and help you hire the right ecommerce operator if that is the gap. I run every account myself and target first results within 30 days. If the issue is that ads bring visitors but not buyers, my page on finding out which marketing is actually working is a good place to start.
A head of ecommerce runs the store itself: the website and checkout, product pages and catalog, pricing and promotions, inventory, fulfillment, returns and marketplaces such as Amazon. Their numbers are conversion rate, order value, delivery and stock. A marketing leader owns demand: positioning, which channels bring customers, what each customer costs and how often they buy again. Some overlap is normal, but one person rarely does both well at scale.
Yes, up to a point. In a small store the founder or a strong generalist often covers both. It stops working when ad spend becomes a large share of revenue, when you sell in several channels such as your own site and Amazon, or when operations need daily attention. At that stage the person spends their week on whatever is on fire, and the strategic work on either side does not get done.
They solve different problems. An agency can run ad accounts, but it will not fix checkout, stock or delivery, and it should not set your positioning or decide what a customer is worth. If the store converts poorly, more ad management will not help much. If the store works and you need more customers, someone senior still has to set the targets the agency works against and judge whether the spend pays back.
Compare what you pay to win a customer with the profit from their first order and their expected repeat orders over a year. If acquiring a customer costs more than their first order profit and few customers come back, growth will burn cash. If repeat buying is strong, a higher first order cost can be fine. Work this out per channel, because one costly channel can hide behind a healthy average.
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