PPC Advertising definition
PPC advertising, short for pay-per-click advertising, is an online advertising model in which advertisers pay a fee each time someone clicks their ad. The most common form is search advertising on Google Ads and Microsoft Advertising, where ads appear for chosen keywords, but PPC also includes shopping, display, video and social ads on platforms such as Meta, LinkedIn and YouTube.
How does PPC work?
Every time a search or page load has ad space, an auction runs in milliseconds. On Google Ads, an ad's position depends on Ad Rank, which combines the bid with ad quality, expected impact of ad assets such as sitelinks, and context. Quality is reflected in Quality Score, based on expected click-through rate, ad relevance and landing page experience. A relevant, high-quality ad can outrank a higher bid and often pays less than its maximum bid per click.
Accounts are organized into campaigns, which set budgets, locations, languages and bidding strategies, and ad groups containing related keywords and ads. Keyword match types control how closely a search must match: broad, phrase or exact. Negative keywords block irrelevant searches, such as "free" or "jobs", which is one of the simplest ways to stop wasted spend.
Types of PPC campaigns
- Search: text ads on search results for specific keywords.
- Shopping: product listings with images and prices from a product feed.
- Display: banner and responsive ads across websites and apps.
- Video: ads on YouTube and other video platforms.
- Performance Max: Google's automated campaigns across all its channels.
- Social: ads on Meta, LinkedIn, X and other networks, often billed per click or per impression.
- Remarketing: ads shown to people who already visited your site or app.
Key PPC metrics
Worked example: a campaign spends 50,000 rupees in a month and generates 100 qualified leads, so cost per acquisition is 500 rupees. If 20 leads become customers worth 10,000 rupees each, revenue is 200,000 rupees and return on ad spend is 4. These numbers, not clicks alone, decide whether a campaign deserves more budget.
- Click-through rate (CTR): clicks divided by impressions.
- Cost per click (CPC): average amount paid for each click.
- Conversion rate: conversions divided by clicks.
- Cost per acquisition (CPA): spend divided by conversions.
- Return on ad spend (ROAS): revenue divided by ad spend.
- Impression share: how often your ads appear when eligible.
PPC best practices
Set up accurate conversion tracking before spending seriously, using the Google Ads tag, Google Analytics 4 and enhanced or server-side conversions where possible, and import offline sales from your CRM so bidding learns from real revenue. Automated smart bidding works well only when it receives enough accurate conversion data.
Match each ad group to a landing page that answers the exact search, review search terms weekly to add negatives, test ad copy and assets continuously, and set budgets by profitability rather than habit. Separate brand and non-brand campaigns so strong brand performance does not hide weak prospecting.
PPC vs SEO
PPC delivers immediate, controllable visibility and precise testing, but traffic stops when spending stops. SEO builds lasting organic traffic but takes months. They reinforce each other: PPC data reveals which keywords convert, guiding content priorities, while strong organic rankings let you reduce bids on some terms. Nexzem manages PPC campaigns together with landing page development and conversion tracking, so ad spend is measured against real leads and sales.