Carousels let you tell a story across multiple cards. They work when you need to show progression, comparison, or multiple proof points.
Step-by-step processes work for implementation-worried buyers. Show the timeline from setup to results. For breach-reactive segment: Card 1 "Upload your users", Card 2 "Send training invite", Card 3 "Team trained by tomorrow", Card 4 "Track completion in real-time". Four cards showing speed and ease.
Before/after comparisons work for proactive segment. Show the transformation. Card 1 "Before: 23% click-through rate", Card 2 "After 30 days: 12% click-through rate", Card 3 "After 90 days: 6% click-through rate", Card 4 "47% reduction, £180K breach risk avoided". Four cards building the ROI case.
Feature showcases work for tool-chooser segment. Show different capabilities. Card 1 "Gamified training employees actually complete", Card 2 "Phishing simulations that teach", Card 3 "Behaviour tracking that proves ROI", Card 4 "One platform, complete security culture". Four cards covering feature differentiation.
Economics breakdowns work for price-sensitive segments. Show the maths. Card 1 "Average breach cost: £2.4M", Card 2 "Training cost: £15 per employee", Card 3 "Breach risk reduction: 47%", Card 4 "Expected savings: £1.1M". Four cards making the affordability case.
Keep carousels to 3-5 cards. Fewer than 3 and you should use a single image. More than 5 and people don't swipe through. First card must hook. If card 1 doesn't stop the scroll, cards 2-5 are irrelevant.