Microsoft Advertising has added Company List and Job seniority to the Audience planner, the tool advertisers use to size an audience before they spend against it. Both dimensions sort people by what their LinkedIn profiles say about where they work and how senior they are, and both now sit in the planner's targeting pane alongside the older LinkedIn options, without the beta notice that previously told advertisers they might not have access yet.
The targeting itself is not new. Microsoft brought job seniority into its ad platform in June 2026. What was missing was the step before the buy: a B2B advertiser could load a list of target companies and run ads against it, but could not find out in advance how many people that list would reach.
Five LinkedIn Dimensions in One Pane
The Microsoft Advertising help documentation now lists nine things an advertiser can target or exclude in the planner. Three of them are the familiar ones: location, age and gender. A fourth covers audience segments such as remarketing lists, in-market audiences and dynamic remarketing lists.
The remaining five all read off LinkedIn profiles. Company covers the employers people work for. Industry covers the fields they work in. Job function covers the types of jobs they hold. Company List covers companies drawn from bulk-uploaded lists. Job seniority covers seniority levels.
That set is specific to Audience campaigns on the Microsoft Audience Network, which is what the planner forecasts.
How the Forecast Is Built
Microsoft says the planner produces its estimates in seconds from three inputs. It reads historical marketplace activity to work out how many people typically match the targeting. It then models current competition, expected traffic and the advertiser's own bid and budget to establish what is realistically achievable. It recalculates as settings change, so moving a city or raising a bid updates the ranges immediately.
Every figure comes back as a range rather than a fixed number, which Microsoft attributes to the variability of live auctions and market conditions. The company also says it filters out estimated invalid traffic and bot activity, so the reach figure describes genuine human audience.
Placement, bid competitiveness, budget limits, seasonality and traffic quality all move the result. Where the market opportunity is larger than the budget, Microsoft scales the estimate down to what the budget can afford.
What the Planner Hands Back
Two sets of numbers come out of it. Potential reach gives an estimated monthly audience and estimated monthly impressions, broken down by demographics, location, in-market interest and device. Predicted campaign performance gives audience size, impressions, clicks, average cost per click and spend against a stated daily budget, bid strategy and bid.
An advertiser who likes the result can apply it straight to the account, either as a new Audience campaign or as a new ad group inside an existing one. Targeting settings can be saved as a reusable Persona, and the whole plan exports as a single CSV carrying the settings, the targeting selections, the performance estimates and the audience insights.
Microsoft's Own Caution
The documentation is direct about the limits. The figures are directional guidance built on historical data and do not guarantee future results. A new audience segment may return nothing at all until 24 to 48 hours of data has processed.
Microsoft also tells advertisers to stop using an older tool: avoid the ad group settings potential reach estimate, because the Audience planner represents potential delivery more accurately.
Why Microsoft Is Building Here
LinkedIn profile data is the one input Microsoft's search and audience inventory carries that Google's does not, and the company has spent 2026 putting more of its platform behind it. It added AI diagnostics to the ad platform on 22 April 2026, a day after it launched AI Max for search campaigns on 21 April 2026. LinkedIn's Trade Desk partnership opened the same B2B data to connected TV buyers on 19 March 2026.
Google and Meta are asking advertisers to hand audience choice to the model. Microsoft is making a narrower pitch to the buyer who already knows exactly which 400 companies matter, and who now gets to check the size of that audience before the money moves.
Recap
What has Microsoft added to the Audience planner?
Two LinkedIn-profile targeting dimensions, Company List and Job seniority, now appear in the planner's targeting pane. Company List targets companies drawn from bulk-uploaded lists, and Job seniority targets people by the seniority level on their LinkedIn profile. Both previously sat behind a beta notice telling advertisers that not everyone had access yet, and that notice no longer appears on the page.
How does the Audience planner produce its estimates?
Microsoft says it combines historical marketplace activity, a model of current competition and traffic against the advertiser's bid and budget, and real-time recalculation as settings change. Results come back as ranges rather than fixed numbers, and Microsoft says estimated invalid traffic and bot activity are filtered out. The company describes the figures as directional guidance that does not guarantee future results.
What can a B2B advertiser do with the forecast?
An advertiser can see estimated monthly audience size and impressions for an account list or seniority audience, then estimated clicks, average cost per click and spend against a given daily budget and bid. The plan can be applied directly as a new Audience campaign or ad group, saved as a reusable Persona, or exported as a single CSV covering settings, targeting, estimates and audience insights.