How to Use GA4 to Understand Which Marketing Channels Drive Conversions

Most Norwegian businesses have Google Analytics 4 (GA4) installed. Few use it to answer the question that matters most: which marketing channels actually produce enquiries and sales?

The problem is that GA4 is often installed and then ignored, even when supported by professional digital marketing services in Norway. Teams look at total visitors, glance at a traffic chart and move on, while key events are missing, campaigns are untagged and consent gaps distort the numbers. Budgets for Google Ads, LinkedIn, SEO and email are set by gut feeling, and nobody can say with confidence which channel deserves more investment and which should be cut. 

The solution is to set up GA4 properly and read it with business questions in mind. Done right, GA4 can show which channels bring visitors who convert, how channels work together and where your budget does the most good. It comes down to seven steps:

1. Set up key events for the actions that matter, such as enquiries, bookings and purchases.
2. Handle consent properly, since Norwegian cookie rules and Google's consent mode affect how much data you see.
3. Tag every campaign with UTM parameters and link GA4 to Google Ads and Search Console.
4. Read the right acquisition reports to compare channels by key events, not just traffic.
5. Use attribution and conversion paths to see how channels work together.
6. Create custom channel groups and explorations that reflect how your business actually markets.
7. Connect GA4 to cost and CRM data so you can judge channels on cost per lead and revenue.

This guide walks through each step for Norwegian businesses, with a GA4 report table, a worked NOK example, GA4's limitations, Norway-specific setup checks, common mistakes and 12 FAQs.

How GA4 Tracks Channels and Conversions

GA4 is built around events. Every page view, click, form submission and purchase is recorded as an event. The events that matter most to your business, such as a submitted enquiry form or a completed purchase, can be marked as key events. Google renamed "conversions" to "key events" in GA4, while Google Ads still uses the word "conversions" for the actions it optimises towards.

To understand which channels drive results, GA4 combines events with information about where visitors came from. These are the core concepts to know:

• Source and medium: where a visit came from, such as google / organic, linkedin / paid_social or newsletter / email
• Default channel group: GA4's built-in grouping of sources into channels such as Organic Search, Paid Search, Organic Social, Paid Social, Email, Referral and Direct
• Session channel vs first user channel: session dimensions show what brought someone in for a particular visit, while first user dimensions show how they first found you
• Key events: the important actions you have chosen to measure, such as form submissions, calls, bookings or purchases
• Attribution: the rules GA4 uses to decide how much credit each channel gets when a customer interacts with several before converting

Once these pieces are set up correctly, GA4 can show you which channels bring in the most key events, which ones help early in the journey and which ones close the deal.

Which GA4 Reports Answer Which Questions

GA4 has many reports, and it is easy to get lost. For understanding channels and conversions, a handful of reports do most of the work.

The table below shows which report to use for each common question.

Report names and menu locations in GA4 change from time to time. If a report is not where you expect it, use the search bar at the top of GA4 or check the library in the Reports section.

Step 1: Set Up Key Events Correctly

GA4 can only tell you which channels drive conversions if it knows what a conversion is. Many properties still track only page views, or mark meaningless events like scrolls as key events, which makes every channel look either useless or brilliant. Start by defining the actions that genuinely represent business value.

Choose a small number of key events that match your goals. These are the most common for Norwegian businesses:

• Enquiry form submissions: tracked on the thank-you page or with a form submission event that fires only on success
• Phone calls: using click-to-call tracking and, ideally, call tracking numbers for more accurate data
• Meeting or demo bookings: through tools like Calendly or your booking system
• Purchases: for e-commerce, with transaction value, currency (NOK) and order ID
• Quote or price requests: if they are separate from general enquiries
• Important downloads: such as a pricing guide or brochure, if they are a meaningful step in your sales process

Then check that they work properly. These checks prevent common problems:

• Test every key event: with GA4's DebugView or real-time reports, by submitting forms and clicking phone links yourself
• Avoid duplicates: such as a form that fires a key event on both submission and thank-you page load
• Exclude internal traffic: so test submissions from your own team do not inflate results
• Assign values where useful: such as an estimated value for an enquiry, so you can compare channels by value, not just volume

For most businesses, three to six well-defined key events are far more useful than a long list of minor actions.

Step 2: Handle Cookie Consent and Consent Mode Properly

In Norway, consent directly affects what GA4 can see. Under the Electronic Communications Act (ekomloven), analytics and advertising cookies generally require valid consent, and the rules became stricter from 1 January 2025. Norway also applies the GDPR through the EEA. If many visitors decline cookies, GA4 will show fewer sessions and key events than actually happened, which can distort channel comparisons.

Set up consent so your data is both compliant and as useful as possible. These steps help:

• Use a proper consent management platform (CMP): with a genuine choice, no pre-ticked boxes and an easy way to decline
• Implement Google's consent mode: so Google tags adjust their behaviour based on visitors' choices. Google requires consent signals for EEA traffic to use measurement and advertising features, as explained in its guide to consent mode for the European Economic Area
• Check when cookies are set: confirm that GA4 only sets cookies after consent where your configuration requires it, and test this in a private browser window
• Keep policies up to date: explain in your cookie and privacy policies which tools you use and why
• Expect some data gaps: GA4 may use modelling to fill some gaps when consent mode is configured, but numbers will never be perfectly complete

This is general information, not legal advice. Check your setup with someone familiar with Norwegian privacy rules, and follow guidance from Datatilsynet and Nkom.

Step 3: Tag Campaigns With UTMs and Link Your Google Tools

GA4 can only assign visits to the right channel if it knows where they came from. Google Ads traffic is tagged automatically when accounts are linked, but LinkedIn posts, newsletters, partner links and many social ads often arrive as "Direct" or "Referral" unless you tag them. That makes some of your most important channels invisible.

Use UTM parameters on every link you control outside Google Ads. These rules keep tagging clean and consistent:

• Always include the three core parameters: utm_source, utm_medium and utm_campaign, such as utm_source=linkedin, utm_medium=paid_social and utm_campaign=q1_webinar
• Use mediums that match GA4's channel rules: such as cpc, email, organic_social, paid_social or referral, so traffic lands in the right default channel
• Keep everything lowercase and consistent: "LinkedIn" and "linkedin" appear as different sources
• Tag everything you control: newsletters, LinkedIn posts and ads, Meta ads, partner links and QR codes on printed material
• Never tag internal links: on your own website, because that overwrites the original source
• Keep a shared UTM spreadsheet: so everyone on the team uses the same names

Then link GA4 to your other Google tools. Linking Google Ads lets you see campaigns, costs and keywords alongside GA4 data and import key events into Google Ads. Linking Search Console shows the organic queries and landing pages behind your organic traffic. Both make channel analysis far more useful for your PPC ads and search engine optimisation work.

Step 4: Read the Traffic and User Acquisition Reports

With key events and tagging in place, GA4's acquisition reports become genuinely useful. The two main reports look similar but answer different questions, and mixing them up is one of the most common sources of confusion.

Understand what each report shows before drawing conclusions. This is the difference:

• Traffic acquisition: groups data by the channel of each session. It answers, "Which channels bring visits that lead to key events?"
• User acquisition: groups data by the channel that first brought each user to your site. It answers, "Which channels are best at finding new people who later convert?"

When you open these reports, focus on the right columns and settings. These tips make the reports more useful:

• Look at key events and key event rate: not just sessions or users, because a channel with less traffic but a higher key event rate may be more valuable
• Filter by one key event: such as enquiry form submissions, rather than viewing all key events together
• Compare date ranges: such as this quarter versus the same quarter last year, to account for Norwegian seasonality
• Drill down within a channel: switch the dimension to session source / medium or session campaign for more detail
• Add revenue or key event value: where you have set values, so you can compare channels by value rather than count

A simple monthly routine is enough for most businesses: check key events by channel, compare with the previous period and note which channels are growing or slipping.

Step 5: Use Attribution and Conversion Paths to See How Channels Work Together

Few customers convert after a single visit, especially in B2B. Someone might first find you through a LinkedIn post, return through a Google search a week later and finally enquire after clicking a newsletter link. Attribution decides how GA4 shares credit for that enquiry across channels.

GA4 uses data-driven attribution as its default reporting model, which uses your account's data to share credit across the touchpoints that contributed to a key event. You can also compare it with last-click options. Use these tools to understand the full journey:

• Attribution settings (Admin): check which reporting attribution model and lookback windows your property uses, so you know how credit is assigned
• Model comparison: compare key events by channel under data-driven attribution and a last-click model. Channels that gain credit under data-driven attribution often play an early or supporting role
• Conversion paths: see which channels typically appear early, in the middle and late in the journey, and how many touchpoints and days it usually takes
• Funnel explorations: see where users from each channel drop off between steps, such as landing page, service page and enquiry form

Use attribution to inform decisions, not to settle them precisely. If a channel like LinkedIn or content rarely gets last-click credit but appears often early in conversion paths, cutting it could reduce conversions elsewhere. Strong content marketing and social media marketing often show their value here rather than in last-click reports.

Step 6: Create Custom Channel Groups and Explorations

GA4's default channel group works for many businesses, but it does not always reflect how you market. You might want LinkedIn separated from other social platforms, partner referrals grouped together or traffic from AI assistants shown as its own channel. Custom channel groups and explorations let you shape reports around your real marketing mix.

These customisations are especially useful. Most are set up once in the Admin area or the Explore section:

• A custom channel group: that separates your key channels, such as LinkedIn, Meta, Google Ads, Microsoft Ads, Organic Search, Email and Partners. Custom channel groups can also be applied to historical data
• An AI assistants channel: grouping referral traffic from sources such as chatgpt.com, perplexity.ai, gemini.google.com and copilot.microsoft.com, so you can watch how this traffic grows
• A free-form exploration: showing key events by channel, landing page and device, to spot where a channel performs well or poorly
• A path exploration: to see what users from a specific channel do before converting
• Saved comparisons: for segments such as new versus returning users or Norway versus other countries

Keep custom reports simple and focused on decisions. A single, well-built exploration that shows key events and value by channel is more useful than a dozen complex dashboards nobody checks.

Step 7: Connect GA4 to Cost and CRM Data

GA4 tells you how many key events each channel produces, but not what each channel costs or which leads became paying customers. To decide where to invest, combine GA4 data with spend and sales outcomes. That is when channel reports turn into real business decisions.

Here is an illustrative example for a Norwegian B2B services company reviewing one month of results. GA4 shows enquiries by channel, and the team adds monthly costs from each platform:

• Google Ads: NOK 30,000 spend and 60 enquiries, or NOK 500 per enquiry
• LinkedIn Ads: NOK 20,000 spend and 10 enquiries, or NOK 2,000 per enquiry
• SEO and content: NOK 25,000 in monthly costs and 50 enquiries, or NOK 500 per enquiry

On these numbers, LinkedIn looks four times more expensive. But the conversion paths report shows LinkedIn appearing early in many journeys that later convert through organic search or Google Ads, and the CRM shows that LinkedIn enquiries close at a higher rate and with larger contracts. Cutting LinkedIn based on cost per enquiry alone could hurt results elsewhere. The numbers are illustrative, but the lesson is common.

To make this kind of analysis routine, connect your data. These steps help:

• Import Google Ads cost data: automatically, by linking the accounts
• Record costs for other channels: in a simple spreadsheet or a reporting tool such as Looker Studio, alongside GA4 key events
• Capture the source in your CRM: using hidden form fields that pass UTM and channel data with each enquiry
• Mark lead outcomes: which leads become qualified and which become clients, so you can calculate cost per qualified lead and cost per client by channel
• Import offline conversions into Google Ads: so campaigns optimise towards real clients rather than form fills, as our guide to Google Ads conversion tracking explains

With cost and CRM data alongside GA4, you can compare channels by what really matters: qualified leads, clients and revenue.

GA4 Limitations to Keep in Mind

GA4 is powerful, but it is not a perfect record of every customer journey. Knowing its limits helps you interpret the data sensibly and avoid making big decisions based on numbers that are incomplete or estimated.

These are the main limitations. Most can be reduced, but not eliminated:

• Consent gaps: visitors who decline cookies may not be fully tracked, so totals can be lower than reality, especially in Norway and the wider EEA
• Cross-device journeys: someone who researches on a work laptop and enquires on a phone may appear as two users
• Dark social and offline influence: links shared in private messages, conversations at events and word-of-mouth referrals often show up as Direct traffic or not at all
• Thresholding and sampling: some reports hide or estimate data when volumes are small or privacy thresholds apply, which is common for smaller Norwegian sites
• Data retention: detailed event data in explorations is kept only for the retention period you set, which is two or fourteen months in standard GA4, so set it to the maximum
• Differences from ad platforms: Google Ads, LinkedIn and Meta use their own attribution rules and windows, so their numbers will not match GA4 exactly

Use GA4 as one important source, not the only one. Combine it with your CRM, ad platform data and a simple "Hvor hørte du om oss?" question to get the fullest picture.

GA4 for Norwegian Businesses: Local Setup Checks

Most GA4 tutorials are written for the US or UK, and they miss details that quietly distort channel data for Norwegian businesses. A few local settings and channel rules make a big difference to how accurate your reports are.

These are the local checks we recommend for every Norwegian GA4 property:

• Set the right time zone and currency: use Europe/Oslo as the reporting time zone and NOK as the currency, so daily figures and revenue line up with your own systems
• Exclude MVA from revenue: send purchase values excluding the 25% MVA, or at least handle MVA consistently, so channel revenue matches your accounting
• Stop payment providers stealing credit: customers who pay through Vipps MobilePay, Klarna or card payment pages leave your site and return, which can turn the sale into a referral from the payment provider. Add these domains to the unwanted referrals list in GA4
• Group Norwegian sources sensibly: traffic from Finn.no, Prisjakt, Gule Sider, 1881, Proff or Mittanbud can deserve its own channel or a Directories and Marketplaces group in your custom channel group
• Compare seasons, not just months: fellesferie in July, Easter, Black Week and Christmas change traffic and conversion rates sharply, so compare with the same period last year
• Separate language versions: if you have Norwegian and English sections, use content groups or page path filters to compare how each language converts by channel
• Look beyond Norway when relevant: if you also market to Sweden, Denmark or Finland, compare channels by country so Norwegian performance is not hidden by averages
• Expect consent gaps: with active consent required under ekomloven, a share of Norwegian visitors will decline analytics cookies, so treat GA4 totals as a strong signal rather than a complete count
• Use one source question everywhere: add "Hvor hørte du om oss?" to forms and sales calls to capture word of mouth and offline influence that GA4 cannot see

If your forms, checkout or tag setup need rebuilding to support this, our web development team can set up clean, consent-aware tracking.

Sammendrag på norsk

De fleste norske bedrifter har Google Analytics 4 installert, men få bruker det til å finne ut hvilke markedsføringskanaler som faktisk gir henvendelser og salg. Med riktig oppsett kan GA4 vise hvilke kanaler som bringer besøkende som konverterer, hvordan kanalene jobber sammen og hvor budsjettet gjør mest nytte.

Dette er de viktigste stegene:

• Sett opp nøkkelhendelser: skjemaer, samtaler, bookinger og kjøp, testet og uten duplikater
• Håndter samtykke riktig: bruk en samtykkeløsning og Googles samtykkemodus i tråd med ekomloven
• Merk kampanjer med UTM-parametere: og koble GA4 til Google Ads og Search Console
• Les riktige rapporter: trafikkanskaffelse og brukeranskaffelse svarer på ulike spørsmål
• Bruk attribusjon og konverteringsveier: for å se hvordan kanalene jobber sammen
• Lag egne kanalgrupper: for eksempel for LinkedIn, KI-assistenter og norske kataloger
• Koble til kostnader og CRM: så du kan sammenligne kanaler på kostnad per kvalifisert lead og omsetning
• Husk norske detaljer: tidssone Europe/Oslo, NOK uten MVA og Vipps og Klarna som uønskede henvisninger

Med riktig oppsett blir GA4 et verktøy for gode budsjettbeslutninger, ikke bare en trafikkgraf.

Common GA4 Channel Tracking Mistakes

Most GA4 problems come from setup gaps rather than the tool itself. Fixing them usually takes a few hours but makes every future report more reliable. Watch out for these:

• No key events: or key events for meaningless actions like scrolls and page views
• Duplicate key events: that count one enquiry twice
• Untagged campaigns: so LinkedIn, email and partner traffic shows up as Direct or Referral
• Inconsistent UTM naming: such as mixing "LinkedIn", "linkedin" and "li"
• Tagged internal links: which overwrite the real source of the visit
• Unlinked Google tools: Google Ads and Search Console not connected to GA4
• Missing or incorrect consent setup: which makes data unreliable and creates compliance risk
• Payment providers as referrals: Vipps, Klarna or card payment pages taking credit for sales
• Confusing traffic and user acquisition: and drawing the wrong conclusions
• Judging channels on last click alone: which undervalues channels that start customer journeys
• No cost or CRM data: so you cannot see which channels produce profitable clients

Why BeBran Digital Is the Best Marketing Agency for GA4 and Channel Analytics in Norway

Knowing which channels bring in business is the foundation of every good marketing budget. BeBran Digital is the top digital marketing agency in Norway sets up GA4 properly for Norwegian businesses and turns the data into clear, confident decisions about where to invest.

This is what Norwegian businesses get when they work with us:

• A full GA4 audit: key events, tagging, consent mode, channel groups and linked accounts checked and fixed
• Consent-aware tracking: cookie banners and consent mode set up in line with ekomloven and GDPR
• Norway-ready configuration: Europe/Oslo time zone, NOK values excluding MVA and Vipps and Klarna handled as unwanted referrals
• Clean campaign tagging: a shared UTM system for LinkedIn, Meta, email, partners and print
• Custom channel groups: including LinkedIn, AI assistants and Norwegian directories and marketplaces
• Reporting that joins the dots: GA4, ad spend and CRM data combined to show cost per qualified lead and revenue by channel
• Senior specialists across Norway: support for businesses in Oslo, Bergen, Trondheim, Stavanger and beyond, in English and Norwegian

How BeBran Helps You Know What Your Marketing Delivers

If you are not sure which channels are bringing in enquiries and clients, BeBran Digital can help you set up GA4 properly and turn the data into clear decisions. We work as one accountable partner across analytics, SEO, paid search, LinkedIn, content and web development.

Depending on where you are today, these are the ways we can help:

• Web development: Google Tag Manager, consent mode, form, call and checkout tracking
• PPC ads: Google Ads and Microsoft Ads campaigns linked to GA4 and optimised on real business outcomes
• SEO services: Search Console integration and organic channel reporting
• Social media marketing: LinkedIn and Meta campaigns tagged and measured against key events
• Content marketing: content whose contribution is visible in conversion paths, not just page views

Ready to see which channels really drive your business?Book a call with BeBran and let's make your data work for you.

Start catching, stop chasing.

BeBran Digital: Best Digital Marketing Agency in Norway.

Frequently Asked Questions

How do I see which marketing channels drive conversions in GA4?

Set up key events for your important actions, then open Reports > Acquisition > Traffic acquisition. Look at key events and key event rate by session primary channel group, and filter by a specific key event such as enquiry form submissions.

What are key events in GA4?

Key events are the important actions you mark in GA4, such as form submissions, calls, bookings or purchases. Google renamed "conversions" to "key events" in GA4, while Google Ads still uses the term "conversions".

What is the difference between traffic acquisition and user acquisition?

Traffic acquisition shows the channel for each session, so it tells you which channels bring visits that convert. User acquisition shows the channel that first brought each user, so it tells you which channels are best at finding new people.

Which attribution model does GA4 use?

GA4 uses data-driven attribution as its default reporting model, which shares credit across touchpoints based on your account's data. You can compare it with last-click options in the attribution reports and change settings in Admin.

Why does my traffic show up as Direct in GA4?

Common reasons include untagged links in emails, LinkedIn posts or documents, links shared in private messages, visitors typing your URL and tracking gaps from consent choices. Adding UTM parameters to your campaign links reduces the problem.

How do I track LinkedIn campaigns in GA4?

Add UTM parameters to every LinkedIn link, such as utm_source=linkedin and utm_medium=paid_social for ads or organic_social for posts. Then compare LinkedIn's key events in the traffic acquisition and conversion paths reports.

Why don't GA4 numbers match Google Ads or LinkedIn?

Each platform uses its own attribution rules, conversion windows and tracking methods, and consent choices affect them differently. Use GA4 for cross-channel comparisons and each platform's data for optimising campaigns within that platform.

Do I need cookie consent for GA4 in Norway?

Generally, yes. Under Norway's Electronic Communications Act, analytics cookies usually require valid consent, with stricter rules since 1 January 2025. Use a proper consent banner and Google's consent mode, and check your setup with a privacy adviser.

Can GA4 show revenue by channel?

Yes, for e-commerce purchases tracked with transaction values, and for other key events if you assign values. Send values in NOK excluding MVA, and for B2B and service businesses, combine GA4 with CRM data to see actual revenue from each channel.

How do I stop Vipps or Klarna taking credit for sales in GA4?

Add the payment providers' domains to the list of unwanted referrals in your GA4 data stream settings. This keeps the sale credited to the channel that originally brought the customer, rather than to the payment page they returned from.

How can I track traffic from AI tools like ChatGPT in GA4?

Create a custom channel group that groups referral sources such as chatgpt.com, perplexity.ai, gemini.google.com and copilot.microsoft.com into an AI assistants channel, then compare its key events with other channels.

Who is the best agency in Norway for GA4 setup and marketing analytics?

The best agency for you sets up clean key events, consent mode and UTM tagging, configures GA4 for Norwegian details such as NOK, MVA and payment providers, builds channel reports that combine GA4 with cost and CRM data and turns the numbers into clear budget decisions. BeBran Digital helps businesses in Oslo, Bergen, Trondheim, Stavanger and across Norway on exactly that basis.