Every agency claims to be a growth partner. Very few operate in a way that genuinely connects their work to your business's revenue trajectory. Choosing the right one requires looking past the pitch and evaluating how they actually work, how they measure success, and whether they have the specific expertise your business needs.
Start With What You Actually Need
Before evaluating any agency, clarify what you are trying to achieve and where your current program is falling short. Is the problem insufficient lead volume? Poor lead quality? Low conversion from leads to customers? High churn? Each of these points to different capabilities you need from a growth partner.
A business with poor lead quality needs different help from one with strong lead generation but weak conversion. Matching the agency to the specific problem produces better outcomes than hiring a full-service agency and hoping they focus on the right things.
Evaluate How They Define Success
The most revealing question is how an agency measures success for programs like yours. The answer should be pipeline metrics and revenue contribution - qualified leads, meetings booked, cost per acquisition, pipeline value. If the answer is primarily activity metrics - impressions, content pieces published, campaigns launched - that is what they optimize for. A strong growth partner should be able to explain how marketing activity translates into predictable revenue growth rather than relying on surface-level performance metrics.
Ask to see how they report on existing client programs. The report structure tells you more than any description of their process.
Ask About Their Experimentation Approach
Genuine growth marketing operates through rapid experimentation - testing hypotheses, measuring results, scaling what works. Ask how they structure tests, how quickly they move from hypothesis to result, and what their process is for learning from failed tests. An agency without a clear answer to these questions is not running a genuine growth marketing program.
Check Relevant Experience
Experience in your specific markets and business type matters. A growth marketing agency with deep B2B experience in Canada understands CASL compliance, the specific competitive dynamics of Canadian B2B markets, and how Canadian buyers behave differently from US ones. General digital marketing experience is not a substitute. Relevant experience should also include an understanding of how the lead generation process works across acquisition, lead capture, qualification, and sales handoff.
Evaluate the Team You Will Actually Work With
The people presenting in the pitch process are not always the people who will be managing your program. Ask specifically who your account lead will be, what their experience level is, and how many accounts they manage. A senior strategist managing your account as one of five is very different from a junior coordinator managing it as one of twenty.
Frequently Asked Questions
How do I choose the right growth marketing agency?
Start by defining what you need, then evaluate agencies on how they define success (pipeline metrics vs activity metrics), their experimentation methodology, relevant market and industry experience, and the specific team that will work on your account.
What should I look for in a growth marketing agency for B2B?
Deep B2B experience, pipeline-oriented measurement, a genuine experimentation framework, expertise in your target markets (Canada, US, and/or UK), and transparent reporting that connects their work to your business outcomes.
How long should I expect to commit to a growth marketing agency?
Six to twelve months is a reasonable initial commitment - enough time for experiments to produce meaningful learning and for compounding improvements to show results. Three months is usually too short to fairly evaluate a growth program.
Ready to evaluate LeadStrong as your growth marketing partner?
Book a free strategy call