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Search Marketing FAQ

Concise answers to the most common questions relevant to SEO, GEO, CRO, and PPC. Filter by discipline, platform, and topic. Cortex references its corpus of platform-published best practices to draft each answer, with citations linking back to the source documents.

Showing 1489-1512 of 1947 questions

What are common A/B testing pitfalls with low traffic or small sample sizes?
CROA/B Testing & Experimentation
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Three pitfalls. Underpowered tests miss real wins (high false negative rate). Apparent winners may be random noise. Long durations introduce contamination from other site changes. Solutions: test bigger, bolder changes (higher MDE achievable); use Bayesian methods with priors; aggregate similar tests for statistical strength; consider qualitative research instead of underpowered tests.

in A/B Testing

How do you handle seasonality or timing effects?
CRO
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Four tactics. Run tests across at least one full business cycle (week, possibly more). Avoid running during major events (Black Friday, holidays, product launches). Use pre-period vs in-period comparison or A/A testing to validate the testing infrastructure. Re-run high-stakes tests in different seasons to confirm winners. Don't extrapolate one-quarter wins to year-round.

in A/B Testing

How do you segment results after an A/B test?
CROA/B Testing & Experimentation
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Three segments matter most. Device (mobile vs desktop often show opposite results). Traffic source (organic, paid, direct, referral). New vs returning users. If overall winner segments hide a loser (variant wins overall but loses on mobile), that's actionable. Segment analysis turns binary win/lose into nuanced strategy. Pre-define segments to avoid p-hacking.

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What should you do if results are inconclusive?
CRO
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Three options. Run longer (if planned sample wasn't reached). Increase MDE (test a bigger change that would be more detectable). Pivot to qualitative research (interviews, session recordings) to refine the hypothesis. Don't roll out without significance - that's effectively a coin flip. Treat inconclusive as a learning opportunity, not a failure.

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How do you interpret conflicting results across metrics?
CRO
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Investigate. Conflicting metrics often reveal segment effects (mobile vs desktop) or unintended consequences (simpler checkout reduces AOV). Trace the conflict: which segment drives the primary win? Which drives the guardrail regression? Conflicting results are common in real testing - the resolution is usually deeper analysis, not retesting. Avoid rolling out winners with material guardrail regressions.

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What tools are commonly used for A/B testing?
CROGoogleA/B Testing & Experimentation
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Five categories. Enterprise: Optimizely, VWO, Adobe Target. Mid-market: AB Tasty, Convert, Kameleoon. Free/low-cost: Google Optimize (sunset 2023; alternatives: Crazy Egg, Microsoft Clarity for heatmaps). Server-side: Statsig, GrowthBook, LaunchDarkly. Choose by traffic volume, technical resources, and budget. Server-side testing is the modern preference for serious programs.

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How do Optimizely, VWO, and Convert compare at a high level?
CROPrivacy & Cookies
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Optimizely: enterprise leader, full-stack + web testing, expensive, complex but powerful. VWO: mid-market sweet spot, includes heatmaps + session recordings, good UI. Convert: privacy-focused, simpler interface, GDPR-friendly, lower price. Pick by team size, technical resources, budget. Optimizely for enterprise; VWO for mid-market; Convert for privacy-conscious teams.

in A/B Testing

What are best practices for running reliable A/B tests?
CROA/B Testing & Experimentation
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Eight. Pre-register hypothesis, sample size, duration, metrics. Don't peek or stop early. Cover full business cycles. Limit concurrent tests on overlapping audiences. Validate with A/A tests periodically. Document tests in a learning log. Replicate big wins before fully rolling out. Segment results by device and source. Trust the process - not all tests win.

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Why does landing page optimization matter for conversions?
CROLanding Pages
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Landing pages are the focused conversion engine - single-purpose, single-CTA pages designed to convert paid traffic. Generic homepages convert at 1-3%; optimized landing pages convert at 8-25%. Landing page CRO directly multiplies paid ad ROI. The same ad budget producing 5x more conversions transforms unit economics. Most underperforming paid campaigns are landing page problems, not ad targeting problems.

in Landing Page Optimization

How do you write a high-converting landing page headline?
CROAd CreativeLanding Pages
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Five rules. Specific (mention the offer or outcome, not generic value props). Benefit-focused (what user gets, not what you do). Match the ad copy (creative-to-page consistency lifts conversions 15-30%). Under 60 characters for mobile. Test 3-5 variants. Example: 'Cut your invoicing time by 80%' beats 'Streamline your business workflow.' The headline is the single highest-leverage element.

in Landing Page Optimization

What makes a strong hero section?
CROAd CreativeLanding Pages
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Five elements. Clear, benefit-driven headline. Supporting subheadline that explains how. Single primary CTA above the fold. Hero image showing product in use or outcome achieved. Removes nav distraction (no multi-page menu on paid landing pages). The hero must communicate value, prove relevance, and offer the action in under 5 seconds of attention.

in Landing Page Optimization

Should the hero image show the product, the result, or the user?
CRO
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Result, ideally. Showing the outcome (cleaner home, healthier skin, signed contract) communicates value faster than product photos. People-with-product images work for lifestyle. Product-only works for established brands where recognition matters. Test all three for your specific audience - no universal winner. Avoid generic stock photos; they lose 5-15% conversion vs real product/result imagery.

in Landing Page Optimization

Where should the CTA be placed on a landing page?
CROLanding Pages
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Three placements. Above the fold (immediately visible). Mid-page after social proof or benefits section. End of page after detailed information. For high-consideration purchases, repeat the CTA 3-5 times. For impulse buys, hero CTA is most important. Always include at least one CTA visible without scrolling - this is the baseline rule for landing pages.

in Landing Page Optimization

What CTA text converts best?
CRO
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Specific, action-oriented, first-person framing. 'Get my free quote' beats 'Submit.' 'Start my 30-day trial' beats 'Sign up.' Avoid: Submit, Click here, Continue, Next. Use: Get, Start, Try, Download, Send, Claim. Match CTA verb to user expectation - 'Get my analysis' if a report follows. Test 3-5 CTA variants - copy changes often produce 10-30% lifts.

in Landing Page Optimization

How many CTAs should a landing page have?
CROLanding Pages
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One primary action repeated 2-5 times. Don't compete with multiple different CTAs. Different visual placements of the same action keep options open without confusion. Secondary CTAs (lower commitment - 'Watch demo') can support without distracting from the primary. Avoid 'Learn more,' 'Contact us,' 'Buy now' all on the same page - that's three competing decisions.

in Landing Page Optimization

What is the best CTA button color?
CRO
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No universal best - depends on the rest of the page. The principle: high contrast with surrounding elements. A red button stands out on a blue page; a blue button stands out on a green page. Test the high-contrast option vs the brand-color option. Color matters less than contrast and copy. Don't change the brand visual identity for a 2% CTA color test.

in Landing Page Optimization

Should the CTA be above the fold?
CRO
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Yes for impulse or simple offers. For complex purchases requiring more information, the CTA should appear after enough context to be meaningful. Always have at least one CTA above the fold - so users who decide quickly don't have to scroll to act. Repeat the CTA at logical decision points throughout longer pages.

in Landing Page Optimization

What is social proof on a landing page?
CROLanding Pages
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Evidence others have used and benefited from your product. Examples: customer testimonials, case studies, brand logos (clients you've worked with), review counts and star ratings, user counts ('Used by 50,000 businesses'), media mentions ('Featured in Forbes, TechCrunch'). Social proof reduces decision risk. Pages without it convert 15-30% lower than pages with strong proof.

in Landing Page Optimization

What types of social proof work best?
CROAttribution & Measurement
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Five effective types. Specific testimonials with names, photos, companies. Detailed case studies with measurable outcomes. Client logos for B2B. Star ratings + review counts for e-commerce. 'X customers' or 'X users' counts. Authority signals (media mentions, awards) for established brands. Avoid generic 'great service' testimonials without attribution - those reduce trust rather than build it.

in Landing Page Optimization

Where should testimonials be placed?
CRO
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Near the primary CTA. The moment users consider acting is when proof matters most. Also near pricing (to justify cost) and at common objection points. Don't bury testimonials at the bottom of the page where users may not reach. Mix testimonial placement throughout - one in hero area, one near pricing, one near final CTA.

in Landing Page Optimization

How many testimonials should I include?
CROLanding Pages
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Three to seven on most landing pages. Fewer feels weak; more feels overwhelming. Quality matters more than quantity - one detailed case study often outperforms five short quotes. For e-commerce, show aggregate ratings (4.7/5 from 2,341 reviews) plus 2-3 specific reviews. Rotate or update testimonials quarterly to keep content fresh.

in Landing Page Optimization

Are trust badges effective on landing pages?
CROLanding Pages
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Yes, when relevant and verified. Effective: SSL/security badges at checkout, payment method logos (Visa, PayPal), money-back guarantee badges, BBB accreditation, industry certifications. Less effective: generic trust seals without backing organization, vague awards, badges that look fake. Place near friction points (forms, checkout). Removing fake-looking badges sometimes lifts conversions.

in Landing Page Optimization

Which trust badges should I use?
CRO
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Three categories. Security: SSL certificate logos, McAfee/Norton at checkout. Payment: Visa, Mastercard, PayPal, Apple Pay logos. Credibility: BBB rating, industry certifications, money-back guarantee. For e-commerce, payment + SSL badges at checkout are essential. For lead gen, BBB and money-back guarantees reduce risk perception. Avoid generic 'Trusted' or 'Verified' badges without verification source.

in Landing Page Optimization

What is the ideal form length for a landing page?
CROLanding Pages
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As short as the conversion event requires. Free trial signup: 1-3 fields. Quote request: 4-7 fields. Detailed consultation: 7-12 fields. Each added field reduces submission rate 5-15%. Cut fields ruthlessly: do you really need phone number, company size, role at this stage? Capture extras later in nurture sequence. Form length is the single largest CRO lever for lead gen pages.

in Landing Page Optimization