Two of the most common SaaS paid search calls to action are start a free trial and request a demo. They look similar on the surface. They are built for different audiences and different sales motions, and choosing the wrong one as the primary call to action for a campaign is one of the more expensive mistakes a SaaS marketing team can make.
This is the simple framework we use to make the choice for clients.
Start with the buyer's psychological readiness
The free trial call to action assumes the visitor is ready to engage with the product directly, on their own, with limited support, in the next session. The demo call to action assumes the visitor wants someone else to walk them through the product before they commit any time of their own.
For most SaaS categories, the visitor's readiness to take either action depends on three things: how complex the product is to evaluate without help, how much business risk the buying decision carries, and how senior the decision maker is.
Simple products evaluating to junior buyers with low business risk: free trial wins. Complex products evaluating to senior buyers with high business risk: demo wins. The middle is where most B2B SaaS lives and the choice is more nuanced.
Map the call to action to the campaign intent, not to the product
One of the biggest mistakes is to apply the same primary call to action to every paid search campaign because that is what the homepage uses. Different campaigns are reaching visitors at different stages and call for different next steps.
A campaign on a category head term with broad intent often calls for a demo as the primary call to action because the visitor is in early evaluation. A campaign on a comparison shopper keyword often calls for a free trial because the visitor has done the research and wants to try the thing. A campaign on a competitor brand term often calls for a hybrid call to action like a personalized demo or a guided trial.
Match the call to action to the implicit stage of the keyword. A single primary call to action across all campaigns is convenient and underperforms.
Test trial versus demo with discipline
The right way to settle the trial versus demo debate for a campaign is to run both in parallel for a meaningful sample and to measure not just signup rate but downstream behavior. The signup rate alone will mislead you because trial and demo signups have very different downstream conversion behavior.
Trial signups typically convert to paid at a lower rate per signup but at a faster pace once they do. Demo signups convert at a higher rate per signup but require more sales effort to get to the same outcome. The right comparison is on cost per closed won, not on cost per signup.
The hybrid call to action is often the answer
Many SaaS products fall in the middle ground where neither pure trial nor pure demo serves the visitor well. A hybrid call to action that promises something in between, a guided trial with a fifteen minute kickoff call, a self serve demo environment with the option to schedule a walkthrough, or a personalized assessment that ends with either a trial or a demo, often outperforms either pure option in this middle ground.
Hybrid calls to action take more setup. They are also a competitive advantage in categories where every competitor is pushing one of the two pure options. Visitors notice the option that respects where they actually are in their decision making.
What to actually measure
For any paid search campaign with a non trivial budget, measure cost per signup, signup to opportunity conversion rate, opportunity to closed won conversion rate, and average deal size by call to action. The combined picture will tell you which call to action is producing the most pipeline per dollar at the campaign level.
Most SaaS marketing teams that take the time to measure this honestly find that their primary call to action choice was made by tradition rather than by evidence, and that the change pays off within a single quarter once the right choice is made.
Want to talk about applying any of this to your account? Send us a note and a senior expert will reply within one business day.