Side-by-side decision guides.
When the answer is "it depends" — these pages name the dimensions honestly. We say where we lose, where we win, and when the competition is the right call.
- Decision
Agency vs in-house team
Cost, channel breadth, continuity risk, business-context proximity. Stage-aware verdict.
- Decision
Agency vs freelancer
Cost, continuity, channel coverage, attribution depth, contracting. When each fits.
- Methodology
Sterling Lab vs typical agency
Operational choices that diverge from the conventional agency model. Sceptical reader's guide.
Four axes decide it. The rest is noise.
Most comparisons of this kind are written by whoever wants to win them. These four are the axes where the answer genuinely changes depending on your situation — so each one names who wins it, including where that is not us.
- 01
Cost structure
An in-house hire is a fixed cost whether or not you spend on ads this month. A freelancer or agency is variable. If your budget is seasonal, or you are still finding which channels work, the fixed cost is the most expensive of the three. If your spend is large and steady, it inverts: in-house becomes cheaper per unit of managed budget, and the maths is not close.
Who wins itIn-house on steady large spend. Freelancer on small or uneven spend.
- 02
Continuity risk
One person is one point of failure, whether they sit in your office or invoice you. Holidays, illness, resignation, a more interesting client — and the accounts go unattended exactly while the bidding algorithms are still learning. A team covers this with a stand-in, and you pay for that cover in the rate.
Who wins itAgency or team. A single operator loses this axis structurally.
- 03
Channel breadth
Google Ads, Meta, analytics, server-side tracking and product feeds are separate crafts. Someone genuinely strong in all five is rare and priced accordingly. Usually a person is strong in one or two and runs the rest at a competent-enough level — and competent-enough is precisely where the money leaks.
Who wins itAgency past two channels. A specialist below that.
- 04
Proximity to the business
Someone in-house hears what sales says, sees which leads turned out to be junk, and knows when stock ran out. An outside partner learns all of that only if you tell them, and the quality of the work tracks the quality of that exchange. This is the one axis where outsiders lose structurally rather than on price.
Who wins itIn-house. Outsiders only close the gap by reconciling against your books.
How each one breaks.
A comparison that only lists strengths is a brochure. Each of the three options has a characteristic way of going wrong, and knowing which failure you can tolerate is usually more useful than knowing which option scores highest.
In-house specialist
Breaks on narrowness and on the ceiling.
Someone inside runs out of people to test a hypothesis against. They see one account — yours — and have no comparison base to answer whether the cost per lead is normal or double what it should be. And within a year or two the role gets small for them, so they leave for somewhere with more accounts.
Freelancer
Breaks on scale and on continuity.
While the budget is modest this is often the best value of the three, and we will say so rather than pretend otherwise. It starts failing past two channels, or when the analytics need to go deeper than the Google Ads interface: server-side tracking and backend reconciliation are separate work that one person rarely carries alongside day-to-day management.
Agency, us included
Breaks on attention and on substituted goals.
Your account is one of several, and the honest answer is that attention gets divided. The worse failure is the second one: it is comfortable for an agency to report the metrics that rise on their own — impressions, clicks, and conversions that are really contact-page views. The check is not the report, it is your own revenue. That applies to us as much as to anyone.
A shortcut, if you want one.
If you are running one channel on a modest budget and still testing whether paid acquisition works at all, hire a good freelancer. Nothing in this section argues otherwise, and paying agency rates at that stage buys overhead rather than results.
If you are running three or more channels, or your tracking no longer agrees with your accounting, the constraint has stopped being management hours and become breadth. That is the point where a team earns its rate — not before.
If your spend is large, steady, and concentrated in one channel you already understand, build in-house and hire outside help only for the specialist pieces. It will be cheaper, and the proximity to your own sales floor is worth more than anything an outsider can reconstruct from a spreadsheet.
The three guides above work through each pairing in detail, with the same rule applied throughout: name the axis, say who wins it, and do not pretend the answer is always the one that pays us.