B2B webinars for Series A companies: the 90-day install for professional services firms
The exact 90-day plan for standing up B2B webinars at Series A — the point where the founder can no longer be every function. Written for managing partners and heads of business development at consultancies and agencies.
This edition is written for managing partners and heads of business development at consultancies and agencies. In professional services firms, professional-services buyers hire partners, not vendors, and the pitch has to reflect that, so the way you install B2B webinars has to reflect that reality from day one.
Series A is the moment B2B webinars stops being optional. The founder has to step out of some of the work, the plan requires a defensible growth number, and every quarter compounds toward the next raise.
Day 1 to 30: diagnosis and instrumentation. Name the constraint, write the ICP, wire opportunities created within 30 days of the session into the board pack.
Day 31 to 60: first live cycle at 20% of planned volume. Founder still in every review. Kill criteria written and enforced.
The binding constraint we see in professional services firms is almost always senior partner time, not lead volume. B2B webinars is only useful in this vertical when it is pointed at that constraint — not at a generic growth number borrowed from another category.
Day 61 to 90: ramp to full volume, hire the first dedicated operator, and hand off ops. Founder retains strategy and the weekly review.
By day 90 the metric is legible and the trajectory is defensible. This is what turns a Series A story into a Series B round.
Trap most Series A companies fall into: measuring registrants instead of pipeline. It usually shows up around day 45 when the founder tries to hire ahead of the model.
The Series A version of B2B webinars looks small compared to what you will build at Series B. That is the point — it is a foundation, not a monument.
Concretely for professional services firms: one signed retainer typically funds the entire growth program for a year. That is the reason it is worth installing B2B webinars properly rather than half-heartedly across three vendors.
Frequently asked questions
Content · professional services — answered
- Does B2B webinars work for professional services firms?
- Yes — provided it is aimed at senior partner time, not lead volume rather than a generic growth number. One signed retainer typically funds the entire growth program for a year.
- Should we start B2B webinars before Series A?
- Yes if the founder has time; the Series A version is the same model at higher spend.
- How much of the round should fund B2B webinars?
- Meaningful — often 20–30% of the growth line — but only after diagnosis.
- When do we hire the first B2B webinars operator?
- Around day 60, once the model has run one full cycle with the founder.
- What Series A trap should we avoid?
- Measuring registrants instead of pipeline — usually a premature senior hire.
- What is the professional services specific pitfall with B2B webinars?
- Running the generic playbook without adapting to professional-services buyers hire partners, not vendors, and the pitch has to reflect that. The install has to be vertical-first.
Growth Broker editorial
Filed under content · professional services