How should campaigns and ad groups be built around placement lists?
Part of Google Ads placements
The short answer
Build placement campaigns in layers. Settings that differ by market, such as location, budget and language, decide the campaign, so Display gets one campaign per market. Each ad group then holds one placement theme or tier with its own bids and creative, and nothing else that widens it. Exclusions sit at the account level, and names keep reports readable.
Key takeaways
- Google advises a separate campaign when budget or location settings differ, which in Display makes the market a campaign decision.
- Demand Gen sets location and language at the campaign and ad group level, so one Demand Gen campaign can hold market specific ad groups.
- An ad group can hold up to 20,000 targeting items, but Google sets no ideal list size; reporting thresholds and bids decide the practical one.
- The Where ads showed report reads at the account, campaign or ad group level, so a clean structure is what makes a list's delivery readable.
How should ad groups be structured for placement targeting?
Google's ad group page (opens in a new tab) says an ad group contains one or more ads that share similar targets, and suggests organizing ad groups by a common theme. Its account organization page (opens in a new tab) adds the rule that matters most for placements: when you need a different set of campaign settings, such as budget or location targeting, create a separate campaign. Put together, campaigns carry the settings a market needs, and ad groups carry the lists.
| Layer | Decides | Placement plan rule |
|---|---|---|
| Account | Account level placement exclusions, which apply across campaigns | Hold the standing exclusions here, not in each ad group |
| Campaign | Budget, bid strategy, location and language settings | One campaign per market or budget line |
| Ad group | Placements, ad group default bid, ads | One theme or tier per ad group, with no topics or keywords beside the list |
| Placement | An individual bid on one site, channel, video or app | Raise or lower one site only with a written reason |
Definition
- Placement ad group
- An ad group whose only content targets are a chosen set of placements, so its delivery, bids and reports describe that list and nothing else.
The "nothing else" matters. Google's placement targeting page (opens in a new tab) says multiple content targeting methods in one ad group reach any of the selected content. A topic or Display keyword beside a placement list turns the ad group's report into a mix of list sites and everything the topic reached. The Targeting and Observation page (opens in a new tab) adds that "Targeting restricts the reach of your ad group," while Observation does not, so the placement setting should read Targeting.
Should each theme get its own ad group?
A theme is a natural unit, because Google's guidance ties ad groups to a common theme and one creative message can then match one kind of content. Google also warns against going too far. Its account limits page (opens in a new tab) lists "Generating a large number of ad groups or campaigns with few creatives or keywords in each" among structures that may undermine the stability of its systems, and says Google may throttle or exclude ad entities in response. One ad group per site is the extreme to avoid.
| Split | Strengths | Limits |
|---|---|---|
| By theme, such as recipes, home design, local news | Creative can match the content; reports show which theme carried delivery | Small themes may fall under reporting thresholds and read as empty |
| By tier, such as core, adjacent, trial | Bids and budgets follow confidence in each site group; trial sites stay visible apart | Tiers are a team convention, not a Google feature, and need a written definition |
| One combined ad group | Simple to build and to read in total; data pools in one place | No theme level reporting; one creative message for every site |
Themes and tiers can combine: a core and a trial ad group per theme doubles the count, so keep the total small enough that each ad group can collect data. Demand Gen pushes the same direction. Google's Demand Gen FAQ (opens in a new tab) says ad group consolidation can help Google AI gather more data and make better informed bidding decisions.
How do you split placements by market?
In a Display campaign, location and language are campaign settings, so the account organization rule applies: a US market and a Canadian market with different budgets or location settings become two campaigns. Demand Gen works differently. Google's Demand Gen audiences overview (opens in a new tab) says country, region, metro, geo and proximity targeting are available at the campaign and ad group level, and recommends setting location, language and other demographics at the ad group level for tailored messaging.
Five steps to split a placement plan by market
- Decide what differs. If the markets need separate budgets, currencies in the plan or location settings, give each its own campaign in Display.
- Set the location option on purpose. Google's advanced location options page (opens in a new tab) separates Presence or Interest, which also reaches people who have shown interest in the locations, from Presence, which reaches people in or regularly in them.
- Split the list by audience, not address. A site based in one country can have readers in the other; place it where its audience is, and allow it in both lists when it serves both.
- Check content language separately. Google's Where ads showed page (opens in a new tab) says language targeting selects the language of the user, not the content of the site, so French and English site checks belong in the list review.
- Name the market in every campaign and ad group. A report row should say its market without opening settings.
How many placements should one ad group hold?
Google gives ceilings, not an ideal. The account limits page sets 20,000 ad group targeting items per ad group and 5 million per account, counting keywords, placements and audience lists together, and says the Google Ads interface adds at most 5,000 placements at one time, with 20,000 at a time through the API. For YouTube, Google's add placements page (opens in a new tab) asks for a minimum of 10 YouTube channels or videos, or the campaign can't be saved.
Between those limits, the right size comes from delivery. Google's Where ads showed page warns that narrow targeting, like individual placements, can result in very low ad traffic, and that placements appear only above minimum thresholds of impressions or interactions. A theme ad group of a handful of small sites may spend little and report less. A theme of hundreds of sites spreads budget thin across sites that never reach the report. Size each ad group so its budget share can buy enough impressions to read.
How does structure affect reporting?
Reporting follows the structure. The Where ads showed report gives placement data at the account, campaign or ad group level. The Google Ads API's placement views guide (opens in a new tab) separates the managed placement view, which reports the placements an ad group targets, from the group placement view, which shows where ads actually served, and warns that low activity placements may be rolled into a "Total: Other" row.
| Level | Pattern | Example |
|---|---|---|
| Campaign | Market, network, goal, list version | CA MB, Display, awareness, list v3 |
| Ad group | Theme, tier | Recipes, core |
| Shared exclusion list | Scope, owner, date | Account standing list, planner, Oct 2026 |
With that structure, three questions answer from the report alone: which market carried delivery, which theme or tier spent, and whether served sites match the approved version. Without it, a combined ad group with topics added mixes list sites with reached sites, and no row says which is which. The Where ads showed guide covers reading the report row by row.
What does a placement structure look like on a real brief?
Fictional example
A countertop appliance brand in Manitoba and North Dakota
An unnamed maker of stand mixers and countertop blenders sells through retailers in Winnipeg, Manitoba, and in Fargo and Grand Forks, North Dakota. Its agency plans a fall Display campaign in English, with separate budgets in Canadian and US dollars.
Because the budgets differ, the plan has two campaigns, one per market, each set to Presence. Inside each, three ad groups hold placement themes: recipes and home baking, kitchen and home design, and local news and lifestyle. A fourth trial ad group per market holds a small set of adjacent food culture sites at a lower default bid. No topics or keywords are added.
A US based home cooking site with readers on both sides of the border appears in the recipe ad group of both campaigns. The standing exclusions sit at the account level, and names follow the market, theme and tier pattern. No performance figures are implied.
How does PlacementGraph hand over a list ready for this structure?
What should a structure audit check before launch?
Placement structure audit
- Each market with its own budget or location settings has its own Display campaign.
- Each placement ad group holds one theme or tier and no topics or Display keywords.
- The placement setting in each list ad group reads Targeting, not Observation.
- Standing exclusions sit at the account level, with any campaign exclusions recorded.
- YouTube placement ad groups hold at least 10 channels or videos.
- Campaign and ad group names state market, theme, tier and list version.
- No ad group sits so close to the 20,000 item limit that a test or update would fail.
For loading the finished structure, see the Google Ads Editor bulk upload guide, and for the location setting in depth, the location presence guide.
Frequently asked questions
Does reorganizing ad groups after launch lose performance history?
Google's account organization page says "Reorganizing your account after you've created several campaigns and ad groups wipes out all the valuable data you've accumulated, possibly affecting how your ads perform." Settle the market, theme and tier split before the first flight, and add new ad groups rather than moving placements between old ones.
Can a placement list be copied from one ad group to another?
Yes, in Display campaigns. Google's add placements page says that after setting up placements for one ad group, you can copy them to other ad groups: select the placements, then Copy from the Edit menu. That suits a theme repeated across market campaigns.
Where should placement exclusions sit in this structure?
Google's account level exclusions page says exclusions can be applied at the account, campaign or ad group level, and that account level exclusions override campaign and ad group settings. Standing exclusions belong at the account; ad group exclusions suit a rule that only one theme needs.
Should Demand Gen channels get their own ad groups?
Google's channel controls page says Demand Gen channel controls are set per ad group and recommends All Google channels for most advertisers. To make a campaign serve a set amount on one channel, it suggests isolating that channel in a separate ad group, which it says might lower efficiency.
Sources
- How ad groups work (opens in a new tab)Google Ads Help
- Organize your account with ad groups (opens in a new tab)Google Ads Help
- About your Google Ads account limits (opens in a new tab)Google Ads Help
- About placement targeting (opens in a new tab)Google Ads Help
- Add, edit, and copy placements (opens in a new tab)Google Ads Help
- About Targeting and Observation settings (opens in a new tab)Google Ads Help
- About advanced location options (opens in a new tab)Google Ads Help
- Demand Gen audiences overview (opens in a new tab)Google Ads Help
- Demand Gen Frequently Asked Questions (FAQ) (opens in a new tab)Google Ads Help
- Channel controls in Demand Gen campaigns (opens in a new tab)Google Ads Help
- Google Display Ads campaigns have a new home in Demand Gen (opens in a new tab)Google Ads Help
- About the Where ads showed report (opens in a new tab)Google Ads Help
- Track ad placement and performance (opens in a new tab)Google for Developers, Google Ads API
- Exclude placements at the account level (opens in a new tab)Google Ads Help
Researched and written by PlacementGraph Research. Read how we research, source and update these pages. Corrections: diana@placementgraph.com.