Definition:
Google Ads is Google’s online advertising platform. It enables businesses and other advertisers to create campaigns that promote products, services or content across Google Search, YouTube, websites, apps and other advertising inventory. The platform was called Google AdWords until 2018.
It commonly forms part of an SEM strategy. The advertiser sets an objective and budget and supplies the campaign assets, while Google determines the opportunities in which each ad may appear and uses performance data to adjust delivery.
Table of contents
How Google Ads works
A campaign begins with an action that the advertiser wants to achieve, such as a sale, a lead, a shop visit or a video view. That objective informs the campaign type, locations, audiences, budget, bidding strategy, ads and creative assets.
When an advertising opportunity occurs, Google checks which ads are eligible and runs an auction. Winning an auction does not depend solely on submitting the highest bid. The quality and usefulness of the ad and landing page, the context of the search or impression, minimum thresholds and the expected effect of ad assets also influence the outcome.
The results are recorded through impressions, clicks, views and conversions. Advertisers can use this information to change the campaign or allow automated strategies to adjust bids and delivery within the configured limits.
Campaign types
Google Ads organises advertising into campaign types designed for different objectives and inventory. The main options are:
- Search: Shows ads in search results when a query triggers relevant keywords or signals.
- Performance Max: Uses one campaign to access different Google channels and optimises delivery against conversion goals.
- Display: Places visual ads on websites, apps and Google properties available through the Display Network.
- Video: Distributes ads across YouTube and other inventory that supports video formats.
- Demand Gen: Combines visual and video formats to reach audiences on surfaces such as YouTube, Discover and Gmail.
- Shopping: Promotes products using Merchant Center data in compatible search results and shopping surfaces.
- App: Seeks app installs, in-app actions or pre-registrations before an app is released.
The campaign type determines the controls, formats and placements that are available. Some campaigns rely mainly on keywords, while others use audience signals, product feeds, creative assets and cross-channel automation.
Budgets and costs
Creating an account does not carry a general minimum-spend commitment. Advertisers set budgets and, depending on the campaign, may orient bidding towards clicks, conversions, conversion value, viewable impressions or other outcomes.
CPC is common in campaigns that charge for clicks, but Google Ads does not operate exclusively on a cost-per-click model. The actual amount depends on competition in each auction, the bidding strategy, objective, quality, audience, inventory and other contextual factors. The budget helps control investment, but it does not guarantee a particular number of sales or leads.
Targeting and automation
Campaigns can use keywords, locations, languages, audiences, first-party data, devices, schedules and contextual signals. The exact controls available vary with the campaign type and account configuration.
Google Ads uses automation to combine assets, select inventory and adjust bids. Automation needs reliable objectives and data to guide its learning. Human oversight is still required to review queries, placements, exclusions, messaging, budgets and policy compliance.
Measurement and optimisation
Measurement should connect advertising spend with business actions. Conversions can be configured through the Google tag, Google Analytics or other imports, with a value assigned where appropriate. Metrics such as cost per acquisition, conversion rate and return on ad spend help assess performance beyond click volume.
Optimisation combines campaign data with a review of ads, queries, audiences and landing pages. An incorrectly defined conversion or incomplete tagging can cause the platform to optimise towards actions that do not represent the real objective. For complex accounts, Google Ads management also covers measurement, budgets, account structure and profitability.