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All lessons in Digital and Web Analytics Lesson 6.1 of 32

Measuring SEO and paid advertising performance

This lesson covers

  • The three layers of SEO measurement
  • The five core paid ad formulas
  • Why ROAS must be compared with margin

Short answer

Measure SEO in three layers: visibility, traffic, and outcomes, and separate branded from non-branded queries. Measure paid ads with CTR, CPC, conversion rate, CPA, and ROAS. Always judge both by business outcomes like conversions and revenue, and compare ROAS against your profit margin, not revenue alone.

SEO in three layers

  1. Visibility: impressions, rankings, and indexed pages (Search Console).
  2. Traffic: organic clicks and sessions, CTR (Search Console and GA4).
  3. Outcomes: organic conversions, revenue, and leads (GA4).

Separate branded and non-branded queries. Branded growth reflects awareness; non-branded growth reflects SEO work. Go deeper in our SEO for Beginners course.

MetricFormulaWhat it tells you
CTRClicks ÷ ImpressionsAd relevance
CPCCost ÷ ClicksPrice of traffic
Conversion rateConversions ÷ ClicksLanding page and offer quality
CPACost ÷ ConversionsCost to get a customer or lead
ROASRevenue ÷ Ad costReturn on ad spend

Example: ₱50,000 spend returning ₱200,000 revenue = ROAS of 4 (400%). Compare ROAS with profit margin, not just revenue. Bidding and attribution are covered in our Google Ads for Beginners course.

Try it: calculate ROAS

    Quick quiz

    1. ₱30,000 spend and ₱90,000 revenue gives ROAS of...
    2. CPA equals...

    Your action

    Key terms

    CPA
    Cost per acquisition: cost divided by conversions.
    ROAS
    Revenue divided by ad cost.
    Branded query
    A search that includes your brand name.
    Profit margin
    The share of revenue left after costs.

    Questions beginners ask

    Is a ROAS of 2 good?

    Only if your margin is above 50%. Otherwise you lose money on each sale.

    Why separate branded searches?

    Branded growth reflects awareness. Non-branded growth reflects SEO work.

    Related lessons

    Want someone to set up your analytics and reporting while you learn? The team at Remar Digital can help.