What is Google Ads? A complete PPC advertising guide (2026)
Published 21/04/2026
If you want to get your business in front of customers immediately, Google Ads is one of the most powerful tools available.
Unlike SEO, which can take months to build traction, Google Ads allows you to appear at the top of search results almost instantly. However, to use it effectively, you need to understand how PPC advertising works.
This guide will walk you through everything you need to know.
What is PPC advertising?
PPC (pay-per-click) advertising is a digital marketing model where you pay each time someone clicks on your ad.
Instead of earning traffic organically, you’re essentially buying visits to your website.
The most popular PPC platform is Google Ads, which allows businesses to show ads on:
– Google search results
– YouTube
– Partner websites
– Mobile apps
The key advantage of PPC is intent targeting. You’re reaching people who are actively searching for what you offer.
What is Google Ads and how does it work?
Google Ads is Google’s advertising platform that runs on an auction system.
Every time someone searches on Google, an auction happens in milliseconds to decide which ads appear.
Here’s what determines whether your ad shows:
– Your bid (how much you’re willing to pay per click)
– Ad relevance (how closely your ad matches the search)
– Expected click-through rate (CTR)
– Landing page experience
These factors combine into something called Quality Score, which heavily influences your costs and performance.
Note: The highest bidder doesn’t always win – the most relevant advertiser does.
How Google Ads works - Keywords, bidding and auctions
At the core of Google Ads are keywords.
When someone searches for a keyword like:
- “electrician near me”
- “emergency plumber”
Google scans advertisers bidding on those keywords and runs an auction.
The Basic Process:
1) You choose keywords relevant to your business
2) You create ads targeting those keywords
3) You set a bid (max cost per click)
4) Google ranks ads based on Quality Score + bid
5) You pay only when someone clicks
This is why PPC is so powerful—it connects you with users at the exact moment of intent.
Types of Google Ads Campaigns explained
Google Ads isn’t just search ads. There are multiple campaign types, each suited to different goals:
1. Search Campaigns
Text ads that appear on Google search results pages.
– Best for high-intent leads
2. Display Campaigns
Visual banner ads across websites.
– Best for awareness and retargeting
3. Video Campaigns
Ads shown on YouTube.
– Best for brand awareness and engagement
4. Performance Max
AI-driven campaigns across all Google channels.
– Best for scaling with automation
Key PPC advertising terms you need to know
Understanding these core terms will help you avoid costly mistakes:
– CPC (Cost Per Click): How much you pay per click
– CTR (Click-Through Rate): % of users who click your ad
– Conversion Rate: % of visitors who take action
– Quality Score: Google’s rating of your ad relevance
– Impressions: How many times your ad is shown
These metrics determine whether your campaigns are profitable or not.
Why businesses use PPC advertising (Pros and cons)
Advantages:
– Instant visibility
– Highly targeted traffic
– Scalable campaigns
– Measurable ROI
Disadvantages:
– Costs can add up quickly
– Requires ongoing optimisation
Competitive industries can be expensive
The key is not running ads, but running them efficiently.
Is Google Ads right for your business?
Google Ads works best when:
– You have clear customer demand
– Your service solves an immediate problem
– You can convert traffic effectively
It may not work well if:
– Your offer is unclear
– Your margins are too low
– Your website doesn’t convert
Traffic alone isn’t enough- conversion matters.
How to get started with Google Ads
If you’re ready to begin, the next step is learning how to structure a campaign properly.
A poorly set up account can waste budget fast, while a well-structured one can generate consistent leads.
Google Ads is one of the fastest ways to grow a business online, but only if you understand how it works.
This PPC advertising guide gives you the foundation. From here, the real results come from:
– Setup
– Continuous optimisation
– Data-driven decisions
If you get those right, Google Ads can become one of your most profitable marketing channels.
FAQs
PPC (pay-per-click) advertising is a model where you pay each time someone clicks on your ad. Instead of waiting for organic traffic, you can instantly appear in search results and drive visitors to your website.
Google Ads works by allowing advertisers to bid on keywords. When users search for those keywords, Google runs an auction and displays the most relevant ads based on bid, quality, and expected performance.
PPC and SEO serve different purposes:
– PPC delivers immediate traffic
– SEO builds long-term organic visibility
The best strategy is usually a combination of both.
There’s no fixed cost. You can set your own budget, and costs vary depending on:
– Industry competition
– Keyword demand
– Target audience
Some clicks may cost under £1, while others can exceed £20+ in competitive markets.
Yes, if campaigns are set up and optimised correctly. Google Ads is especially effective for businesses that:
– Offer high-value services
– Target high-intent keywords
– Have strong landing pages
You can start getting clicks and traffic within hours of launching a campaign. However, meaningful performance improvements usually take 2–4 weeks of optimisation.