Paid social for SaaS: should you advertise the trial or the demo?

Why does this choice decide everything else?

Because it sets the conversion event, and the conversion event is what the platform optimises towards for the life of the campaign.

Point it at trial signups and it will find people who sign up for things. That population overlaps with your buyers and is much larger than them, and it includes a substantial number of people who will never open the product twice. Cost per signup will look excellent.

Point it at booked demos and it optimises for a rarer and far more expensive behaviour, which is agreeing to talk to a salesperson. Cost per conversion goes up several times and the people arriving are qualitatively different.

Neither is correct in general. What matters is which event actually predicts revenue in your business, because that is the one worth paying the platform to find more of.

The conversion event is not a reporting choice. It is an instruction, and the platform follows it exactly.

How do you tell which one your product needs?

Ask whether a stranger reaches the moment your product becomes obviously useful without anyone helping them.

For some products they do. The value is visible in one session, setup is trivial, and there is no data to import or team to onboard. For others the honest answer is no: the product only becomes useful after integration, after data is loaded, or after several people are using it together. A trial for a product like that is a demonstration of an empty interface.

The number that settles it is what proportion of self-serve signups reach that moment. If a meaningful share do, sell the trial. If almost none do without help, the trial is not a shorter path to revenue, it is a leak with a low cost per conversion.

Look at your existing signups before deciding. This is knowable from data you already have rather than something to test.

What should the trial route optimise for instead of signups?

The first moment of real use, not the account creation, and this is the single highest-value change most SaaS accounts can make.

Signup is a form submission. Activation is evidence. If you can define the action that reliably separates users who stay from users who vanish, and fire that as a conversion event, the platform starts finding people who do that thing rather than people who fill in forms.

The constraint is volume. The platform needs enough of an event to learn from, so if activation is rare, optimise on signup and send activation back as a secondary event until the volume supports it.

Expect cost per signup to rise when you make this change. That is the change working. The number to watch is cost per activated user, which usually falls.

What creative works when the product is the argument?

Show the product doing the thing, and show it early enough that somebody scrolling can tell what it is.

Software has a real advantage over most categories advertised on these platforms: you can demonstrate the value rather than assert it. A short screen recording of the actual workflow, with the specific problem named in the first line, consistently outperforms a stylised brand execution for products people have not heard of.

The failure mode is showing an interface without a problem. A tour of your dashboard means nothing to somebody who does not yet know what it is for. Name the problem, then show the resolution.

Then make more of them. Creative fatigue is faster on these platforms than most teams plan for, and a supply of variations on a working idea beats a single polished asset that stops working in a month.

You can show the product working, which most advertisers cannot. Wasting that on a stylised brand execution is giving away your one structural advantage.

Can you run trial and demo together?

Yes, and the sensible way is by segment rather than by campaign, once there is enough budget for both to clear their thresholds.

The usual split follows company size. Smaller companies self-serve and larger ones want a conversation, and letting the visitor choose which they want on the same landing page produces a useful signal in itself, because the ones who ask for a demo are telling you something about their size and urgency.

What does not work is running both as separate campaigns against the same audience at a small budget. Each ends up below the volume the platform needs and neither produces a readable result.

If you can only fund one, fund the one that matches how your product actually proves itself, not the one with the better-looking cost per conversion.