LinkedIn Ads for B2B: campaign structure from scratch

LinkedIn Ads account structure

Campaign Manager has three levels: Campaign Group, Campaign and Ad. Campaign Group handles budget and scheduling. Campaign defines the objective, audience and bidding. Ad is what the user sees.

Practical recommendation: one Campaign Group per product or service, one Campaign per objective, 3-4 ad variations per Campaign. This structure lets you clearly identify what works.

How to organize Campaign Groups correctly

The frequent mistake is a single Campaign Group for all activity. Mixing awareness and lead generation in the same group makes budget allocation inefficient and prevents clean performance comparison. One Campaign Group per product or audience segment gives granular spend control.

Set budget limits at Campaign Group level as the first control layer, then daily budgets at Campaign level for flexibility. LinkedIn's hierarchical system lets you quickly pause an entire product line without touching other campaigns.

How many ads per campaign are enough

The functional minimum is 3 variants per Campaign: LinkedIn automatically tests and routes delivery to better-performing variants. With fewer than 3, you have no comparison data. With more than 6, the algorithm doesn't have enough budget to generate significant data per variant. The optimal range is 3-4 ads per Campaign, varied on headline or image — not both simultaneously.

Available objectives and when to use them

• Awareness: Brand Awareness. Useful for new markets or unknown products. Optimizes for impressions, not actions.
• Consideration: Website Visits, Engagement, Video Views. Website Visits is most used for driving qualified traffic to a landing page.
• Conversions: Lead Generation, Website Conversions. Lead Generation with Lead Gen Forms has 3-5x higher conversion rates than website.

For a B2B brand new to LinkedIn: 2-4 weeks of Website Visits for warming, then Lead Generation.

Brand Awareness: when it makes sense and when it doesn't

Brand Awareness is justified when entering a new market or launching an unknown product. It doesn't make sense if you're already known in your niche or if total budget is below €1,500/month. In that case, direct investment in Lead Generation with an educational TOF message is more efficient. Awareness without a downstream funnel is spending without purpose.

Website Conversions vs. Lead Gen Forms: the right choice

If your landing page converts above 5%, Website Conversions can bring more qualified leads than Lead Gen Forms, because the user must make an active effort. If your landing page is below 3%, Lead Gen Forms win on volume at lower cost. Test both simultaneously with equal budget for 30 days before choosing.

Building a precise B2B audience

The combination that works best for Romanian B2B: Job Function + Seniority + Industry. Example: selling ERP software for manufacturing means targeting Operations, Director/VP/C-Level seniority, Manufacturing industry. This gives 5,000-20,000 people in Romania.

• Minimum size: 30,000 people for stable delivery. Below this, costs increase and reach becomes unpredictable.
• Matched Audiences: your CRM contacts or website visitors uploaded to LinkedIn. Higher conversion, but limited audience size.
• Lookalike Audiences: LinkedIn generates similar audiences based on your lists. Works well with lists of minimum 300 contacts.

Don't add more than 3-4 targeting criteria simultaneously. Each criterion halves your audience and increases cost.

Job Function vs. Job Title: which works better

Job Title seems more precise but has enormous variation: "Commercial Director", "Head of Sales", "Sales Director" may all be the same role. Job Function plus Seniority captures this variation without accidentally excluding relevant candidates. Reserve Job Title for products where the title is highly standardized (e.g., "Chief Information Officer").

Audience size and optimal frequency

A 30,000-100,000 person audience is optimal for a 30-day campaign with €500-€1,000 budget. Recommended frequency: 2-4 impressions per person per month — enough to build familiarity, not enough to irritate. When frequency exceeds 6, engagement drops sharply and CPM increases. Monitor the Frequency metric in Campaign Manager weekly.

Ad formats and when to use them

Single Image Ad is the base format — most scalable, lowest production cost. Document Ads (downloadable PDFs directly from feed) have lower CPL but require valuable content. Video Ads have higher CTR but require production investment.

Lead Gen Forms deserve special attention: the user completes a pre-populated form using LinkedIn profile data without leaving the platform. Conversion rate is 3-5x higher than an external landing page. The downside: leads are less qualified if the form is too simple.

Document Ads: the underrated format

Document Ads let users read a PDF directly in the feed without clicking an external link. They work well for thought leadership: an industry report, a practical guide, a market analysis. CPL is 20-30% lower than Single Image Ads, and leads are more qualified because they consumed content before sharing their contact. The downside: producing a quality document takes time.

Video Ads: when the investment is worth it

Video Ads have 20-40% higher CTR than image ads. They work well for product demos, client testimonials and concept explanations. Optimal duration: 30-90 seconds, with subtitles because 70% of users watch without sound. If you don't have a production budget, a well-recorded product demo screenshare outperforms a generic static image.

Bidding strategy and budget allocation

For new campaigns, Maximum Delivery with a fixed daily budget is the safest approach. Recommended budget per campaign: €500-€1,000/month for relevant data. If you test 3 campaigns simultaneously (different audience, message, offer), minimum total budget is €1,500/month.

Maximum Delivery vs. Cost Cap: staged approach

Maximum Delivery is recommended for the first 30-45 days — let the algorithm explore the audience without artificial constraints. Cost Cap is introduced after you have sufficient data (minimum 20-30 conversions) to set a realistic CPL target. Manual Bidding is useful when you need strict CPC control in small audiences with inconsistent delivery.

How to read reports and which metrics matter

Metrics to track in priority order: Cost per Lead (CPL), Lead Form Completion Rate (if using Lead Gen Forms), CTR (to evaluate creative quality), and Frequency (to avoid audience saturation). Vanity metrics to ignore: Impressions without context, Clicks without conversions, and Engagement Rate without correlated Lead Rate.