"Search engine marketing" gets used two ways online, and the confusion causes real problems when businesses budget for one and hire for the other. In its original, narrower definition, SEM refers specifically to paid search advertising — the sponsored results at the top of Google, bid on through Google Ads. In broader marketing usage, the term sometimes gets stretched to cover SEO too, since both involve search engines. Google Ads and most industry practitioners still use the narrow definition, so if you're hiring an "SEM specialist," you should expect someone focused on paid search campaigns, not organic ranking.
Ad position and cost per click aren't determined by bid amount alone. Google calculates an Ad Rank for each advertiser in an auction using a formula that combines your bid with your Quality Score — a 1-10 rating based on expected click-through rate, ad relevance, and landing page experience. A lower bidder with a strong Quality Score can outrank and out-pay a higher bidder with a weak one, which is why two advertisers targeting the identical keyword can pay meaningfully different amounts per click for the same position.
Landing page experience is the factor advertisers most often neglect, since it sits outside the Ads platform itself. Sending traffic to a slow, generic homepage instead of a dedicated page matching the ad's specific offer routinely costs 20-40% more per click than the same campaign pointed at a well-matched, fast-loading landing page — a difference that compounds significantly across a full month of spend.
| Match type | Example | Behavior |
|---|---|---|
| Broad match | running shoes | Matches related searches broadly, including synonyms and related intent — widest reach, lowest precision |
| Phrase match | "running shoes" | Matches searches containing that phrase or a close variation |
| Exact match | [running shoes] | Matches the specific term and very close variants only — highest precision, lowest volume |
Broad match has become more usable in recent years as Google's matching algorithm has improved, but it still requires close monitoring of the search terms report — without it, broad match campaigns can quietly bleed budget on tangentially related searches that were never worth targeting.
Manual CPC bidding gives full control but requires constant attention to stay competitive. Automated strategies — Target CPA (bidding to hit a specific cost per acquisition), Target ROAS (bidding to hit a specific return on ad spend), and Maximize Conversions — hand bid decisions to Google's algorithm in exchange for needing enough historical conversion data, typically 30+ conversions in the prior 30 days, to work reliably. Campaigns without that conversion volume often perform worse under automated bidding, since the algorithm has too little data to optimize against, which is why newer accounts frequently start manual and graduate to automated bidding once volume builds.
Since landing page experience directly affects both Quality Score and cost per click, a dedicated, fast-loading page beats sending SEM traffic to a generic homepage. UIXDraft's templates are built for exactly this kind of message-matched landing page.
Browse the Templates →Negative keywords tell Google which searches to exclude an ad from, and they're consistently the most under-maintained part of SEM accounts. A campaign targeting "accounting software" without excluding "free," "jobs," or "course" will show up for searchers looking for free tools, accounting job listings, or educational courses — none of whom are likely customers, but all of whom generate clicks the advertiser pays for. Reviewing the search terms report weekly for the first month of a new campaign, then monthly afterward, and adding negatives for any search term that generated clicks without a plausible path to conversion, is one of the highest-leverage, lowest-effort optimizations available in a Google Ads account. Accounts that skip this step routinely waste 10-20% of spend on searches that were never going to convert.
RLSA lets advertisers adjust bids or show different ads to people who've previously visited their site when those same people search again on Google. Someone who visited a pricing page last week and now searches a related term again is a meaningfully warmer lead than a first-time searcher, and bidding more aggressively for that returning visitor, or serving them a more specific ad referencing what they looked at, often produces a lower cost per conversion than treating every searcher identically. It's a frequently underused feature since it requires linking Google Ads to Google Analytics audiences, a setup step many accounts never complete.
Ad extensions — sitelinks, callouts, structured snippets, and call extensions — increase the physical size of an ad on the results page without additional bid cost, and Google's own guidance associates well-used extensions with meaningfully higher click-through rates. They also feed into Quality Score indirectly by improving expected click-through rate. Accounts running text ads without any extensions are leaving a low-effort improvement on the table; adding four or five relevant sitelinks and a couple of callouts is typically a 15-minute task per campaign.
Device-level bid adjustments are another underused lever. Conversion rates often differ meaningfully between mobile and desktop depending on the product — a high-consideration B2B purchase might convert far better on desktop, while a local, call-driven service business might see the opposite. Reviewing the device breakdown in the campaign's segment view and adjusting bids accordingly, rather than bidding identically across devices, usually improves blended cost per conversion within the first month of doing it.
Average cost per click varies enormously by industry — legal and insurance keywords can run $20-50+ per click in competitive markets, while many ecommerce and local service categories sit closer to $1-3. A workable starting budget is one that can generate at least 15-20 clicks per day per campaign; below that, there's not enough data flowing through the account weekly to make confident optimization decisions.
In its traditional, narrower definition, yes — SEM specifically means paid search advertising, and Google Ads is the dominant platform for it. Some marketers use the term more loosely to include SEO as well, but if you're hiring for an "SEM role" in a professional context, expect it to mean paid search specifically.
Ad Rank combines bid amount with Quality Score, so a competitor with stronger ad relevance and a better-matched landing page can outrank a higher bid with weak Quality Score. Improving your own Quality Score is usually cheaper than trying to outbid a well-optimized competitor.
Google generally recommends around 30 conversions in the trailing 30 days before Target CPA or Target ROAS bidding has enough signal to optimize reliably. Below that threshold, manual bidding or Maximize Clicks, which doesn't require conversion data, typically performs more predictably.