How pay per click advertising works on Google and Bing, what it costs, what PPC management includes, how feed management and CSS partners fit in, and how to choose a PPC agency or company.
Pay per click advertising, also called PPC or pay per click internet advertising, lets a business buy visits to its website instead of earning them organically. You bid on the search terms or audiences you want to reach, write an ad, and pay the platform each time a user clicks it.
Unlike traditional advertising, where you pay for exposure, PPC ties spend to an action. That makes it measurable: you can see what each click cost, how many became leads or sales, and adjust in real time.
Text ads on results pages, triggered by keywords. Highest purchase intent.
Product image, price and store, powered by a product feed. Core for ecommerce.
Banner and image ads across partner sites. Best for awareness and remarketing.
YouTube, Meta, LinkedIn and others, often billed per click or per view.
Every time a user searches, the platform runs an instant auction among eligible advertisers. The winner is not simply the highest bidder. Google ranks ads using Ad Rank, which rewards relevance as much as budget.
Figure 1: The PPC auction. Ad Rank decides position; you are charged only when a user clicks.
Ad Rank = Max Bid × Quality Score (+ ad asset impact)
Quality Score reflects expected click-through rate, ad relevance, and landing page experience. A higher score can win a better position at a lower cost.
Figure 2: The three components of Quality Score. Improving them is the cheapest way to cut PPC cost.
Google pay per click advertising (Google Ads) is the default starting point because of its reach. Bing pay per click advertising (Microsoft Advertising) is smaller but often cheaper, and it adds audiences Google does not reach as well. Most mature accounts run both.
| Factor | Google Ads | Microsoft (Bing) Ads |
|---|---|---|
| Search reach | Largest global search audience | Bing, Yahoo, DuckDuckGo, Copilot surfaces |
| Average CPC | Higher, more competition | Often lower |
| Audience | Broad, all demographics | Skews older, desktop-heavy, higher income |
| Ad formats | Search, Shopping, Display, YouTube, Performance Max | Search, Shopping, Audience, Import from Google |
| Best use | Primary volume channel | Low-cost expansion of proven campaigns |
Launch on Google first, prove the campaigns convert, then import them into Microsoft Advertising. It is usually the fastest way to add incremental conversions at a lower CPC.
PPC has no fixed price. Cost is set by auction competition, keyword value, and your quality. Budget planning starts with one identity:
Total Spend = Clicks × Average CPC
Example: 2,000 clicks × $2.50 CPC = $5,000 ad spend. Add a management fee if you outsource.
Figure 3: CPC varies widely by industry. High-value verticals such as legal and insurance pay many times more per click than retail.
| Metric | Formula | What It Tells You |
|---|---|---|
| CTR (click-through rate) | Clicks ÷ Impressions × 100 | How compelling your ad is |
| CPC (cost per click) | Total Cost ÷ Clicks | Price of each visit |
| Conversion Rate | Conversions ÷ Clicks × 100 | How well traffic turns into leads or sales |
| CPA (cost per acquisition) | Total Cost ÷ Conversions | Cost to win a customer |
| ROAS | Revenue ÷ Ad Spend | Revenue returned per dollar spent |
| ROI | (Revenue − Cost) ÷ Cost × 100 | Net profitability |
You spend $5,000, get 2,000 clicks, and win 100 sales at $120 each. CPC = $2.50. Conversion rate = 5%. CPA = $50. Revenue = $12,000, so ROAS = 2.4× and ROI = 140%. Whether that is good depends on your margin.
PPC advertising management (also called pay per click marketing management or Google Ads management) is the continuous work that keeps a paid account profitable. A campaign left alone drifts: costs creep up and wasted clicks pile up.
Figure 4: PPC management is a loop, not a one-time setup.
For ecommerce, Google Shopping is often the highest-return PPC channel, and it runs on your product feed, not on keywords you write. Two terms come up constantly here.
Optimising product titles, descriptions, GTINs, categories, prices, images and availability so your products match more searches and earn higher click-through. Better feeds mean more impressions at the same budget.
A Comparison Shopping Service partner is a Google-approved provider that submits and runs Shopping ads for merchants. In some regions, using one can reduce Shopping CPCs through a partner discount.
Lead titles with brand and product type, include size, colour and model, keep price and stock in sync with your site, use high-quality images on clean backgrounds, and fill every identifier field. Feed quality directly affects which searches your products appear for.
Whether you hire a pay per click advertising agency, firm, or company, or buy Google Ads management services, judge them on evidence rather than promises. The best pay per click advertising company for you is the one aligned to your margins and goals.
| Criteria | Good Sign | Red Flag |
|---|---|---|
| Account ownership | You own the ad accounts and data | Agency owns the account |
| Reporting | Revenue, CPA and ROAS, not just clicks | Vanity metrics only |
| Contracts | Monthly terms, clear fees | Long lock-ins, hidden markups |
| Credentials | Google Partner or Microsoft Partner status, relevant case studies | No verifiable results |
| Strategy | Explains keyword, negative and testing approach | "Secret sauce" with no detail |
| Pricing | Flat retainer or 10 to 20% of spend, aligned to growth | Guaranteed rankings or unrealistic promises |
Pay per click (PPC) advertising is an online advertising model in which an advertiser pays a fee only when someone clicks on their ad. Ads appear on search engines such as Google and Bing, on social platforms, and across display and shopping networks. Placement is usually decided by an auction based on your bid and the quality of your ad.
In Google Ads, every search triggers an auction. Google ranks eligible ads by Ad Rank, which combines your maximum bid with quality factors: expected click-through rate, ad relevance, and landing page experience. You pay only when a user clicks, and the actual CPC is often lower than your maximum bid.
It depends on industry and competition. Search CPCs range from roughly $1 to $2 in low-competition sectors to $50 or more in high-value legal and insurance keywords. Total spend equals clicks multiplied by average CPC. Agencies typically add a management fee of about 10 to 20 percent of ad spend or a flat monthly retainer.
It is the ongoing work of running paid campaigns: keyword research, campaign structure, ad copywriting, bid and budget optimisation, negative keyword control, landing page testing, conversion tracking and reporting. It can be handled in-house or by a PPC agency or Google Ads management service.
Google Ads offers the largest audience and inventory. Microsoft Advertising (Bing) has a smaller audience but usually lower CPCs and less competition, and reaches Bing, Yahoo and DuckDuckGo users. Many advertisers import proven Google campaigns into Microsoft Advertising to expand reach at low cost.
Feed management is optimising and maintaining the product data feed (titles, descriptions, prices, identifiers, images, availability) that powers Google Shopping and other product ads. Better feeds improve relevance, impression share and click-through rate, which is essential for ecommerce PPC.
A Comparison Shopping Service (CSS) partner is a Google-approved provider that submits and runs Shopping ads on behalf of merchants. In regions such as the EU, using one can lower Shopping CPCs through a partner discount, so merchants often use a CSS partner alongside a PPC agency.
Look for Google or Microsoft partner status, transparent reporting and fees, relevant case studies, revenue-focused targets, no long lock-in contracts, and full ownership of your ad accounts. Ask how they approach keywords, negatives, testing and attribution, and avoid anyone who guarantees rankings or results.