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Paid search (SEM)

Capturing high-intent searchers the instant they look — when you can afford to pay per click.

Bid on search terms.

Cost to run

Cost expenseHighTime expenseLow

Cost to test

Test budget$500–5kTest effortMediumTime to signalDays

Nature

Buyer intentAlready searchingDirectionInboundSettingOnlineLong-term assetNoToneNeutral

Fit

Owner skillsetPaid-media marketerCompany stage0 to 1

Paid search places ads at the top of Google or Bing results for keywords you bid on. Someone types a query, your ad appears, they click — and you pay for that click. Because the buyer was already looking for something related to what you offer, conversion rates tend to be higher than on channels where you interrupt people who weren't searching. The channel is rented: pausing spend stops the traffic immediately.

What makes paid search useful is speed and intent. You can go from no presence to first-page visibility in hours, and the people clicking are expressing active demand. The tradeoff is cost — competitive keywords in SaaS and professional services carry high cost-per-click rates — and nothing you build here carries over when you stop paying.

When it fits

You have a clear idea of what your buyers search for and can write ads that match the intent behind those queries.
Your unit economics support a meaningful cost per click; in many B2B categories CPCs run $20–80 or more.
You want fast conversion data — days, not months — to test landing pages and offers before investing in longer-horizon channels.

When it doesn't

Your category has no search volume yet. Paid search requires existing demand; if nobody is searching for the problem, there are no queries to buy.
Your budget is very limited. A useful test requires enough spend to generate statistically meaningful conversions, not just a handful of clicks.

The trade-off

Paid search is one of the few channels that can reach a high-intent buyer the same day you launch a campaign. The cost of that speed is that every visit has a price tag and none of those visits build anything you keep. Successful accounts compound through better creative, landing pages, and negative keyword hygiene — but the underlying economics depend on willingness to pay per click indefinitely.

How to run a first test

Paid search can return a meaningful read in days, which makes it a natural first channel to test when search demand exists:

Use Google Ads' Keyword Planner to identify 10–20 keywords with real search volume that closely match what a buyer would type while actively looking for your solution. Avoid broad match at this stage — phrase or exact match keeps the test clean.
Write two to three ads for each ad group, varying the headline and the benefit claim. Match the ad copy tightly to the keyword intent so that the message feels like a direct answer to the query.
Set a daily budget of $50–100 and let the campaign run for 7–14 days. The goal is to accumulate enough clicks to see a meaningful conversion rate pattern, not to fill a pipeline.
Measure cost per conversion against a target CAC rather than click-through rate alone. If conversion costs are within range, expand keyword coverage and budget incrementally. If costs are far off, check whether the landing page is the bottleneck before adjusting bids.

See Systematic Channel Testing.

Tools & services to activate it

Google Ads — Google's platform for search, display, and shopping campaigns across the Google network.
Microsoft Advertising — Search ads on Bing, Yahoo, and DuckDuckGo — often lower CPCs than Google with similar intent. (Auction-based; no platform fee)
Optmyzr — PPC management and optimization tooling for Google and Microsoft Ads accounts. (From ~$208/mo)

Related channels

More in Search: SEO, App store optimization.