What Agencies Mean by "Optimisation" (And What They Rarely Touch)
Optimisation is the word agencies use most often and define least clearly. Every monthly report claims it. Every call references it. But what does it actually mean?
In most cases, optimisation refers to a narrow set of activities: bid adjustments, keyword additions, negative keyword refinement, audience tweaks. These are the visible, reversible, low-risk changes that can be made quickly and reported easily.
They are also, in most cases, the least impactful changes available.
The Safe Optimisation Playbook
Most agency optimisation follows a predictable pattern:
Bid adjustments. Increase bids on what converts, decrease on what does not. Simple, defensible, rarely transformative.
Negative keywords. Block irrelevant queries. Necessary but incremental. Diminishing returns after the first few months.
Audience refinement. Add or exclude audiences based on performance. Often marginal impact in Shopping and PMAX contexts.
Budget reallocation. Shift budget toward better-performing campaigns. Useful, but rarely addresses why performance differs.
These activities keep the account moving. They produce something to report. They do not require asking uncomfortable questions.
What Rarely Gets Touched
The changes that actually matter are harder.
Account structure. Rebuilding structure to segment by margin rather than category. Time-consuming, risky in the short term, transformative in the long term.
Feed architecture. Rebuilding the feed to provide clean signals to Shopping and PMAX. Requires coordination with ecommerce platform. Often ignored.
Conversion action hierarchy. Auditing what conversions are being tracked and whether they reflect commercial value. Requires business understanding, not just platform knowledge.
PMAX segmentation. Breaking apart PMAX into meaningful asset groups with proper exclusions. Complex, time-intensive, rarely done properly.
Commercial alignment. Ensuring that targets, budgets, and optimisation logic reflect actual margin, not arbitrary benchmarks. Requires access to business data most agencies never see.
A proper Google Ads audit examines all of these. Not just what is being optimised, but what is not.
Why This Happens
Agencies avoid structural work for understandable reasons.
Structural changes take time. They do not produce quick wins. They often cause short-term performance dips before long-term gains. Monthly reporting does not reward patience.
Structural changes also require deeper access. They need margin data, product-level profitability, business context. Most agencies operate with platform access only. They optimise what they can see.
This is not malice. It is incentive alignment. Agencies optimise within the constraints they are given. The question is whether those constraints are appropriate.
The Comfortable Plateau
The result is accounts that reach a plateau and stay there.
Bid adjustments produce diminishing returns. Negative keywords are exhausted. Audience refinement has marginal impact. The easy optimisations are done. The hard ones are never started.
The account looks healthy. Performance is stable. But stable is not the same as good. The ceiling is lower than it could be, and no one is asking why.
What to Ask
If your agency reports on optimisation every month, ask what they are actually changing.
Ask whether they have reviewed account structure in the last year. Ask whether they have audited the feed. Ask whether ROAS targets reflect margin. Ask whether PMAX is segmented or a catch-all.
The answers will tell you whether optimisation means continuous improvement or comfortable maintenance.
This is why when not to hire us exists. If you want comfortable maintenance, we are not the right fit. If you want the hard optimisation that actually moves the needle, that is a different conversation.