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Learning

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A visual, hands-on learning platform for engineers, designed to crack algorithms, system design, and AWS.

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  • Visualize & Solve

    See algorithms in motion

  • Interactive Practice

    Code and get instant feedback

  • AWS Certification Prep

    Pathways to AWS success

Core Disciplines

Explore the
Core of
Intelligence

Master the essential disciplines that power intelligent systems. Each area is a building block in your learning journey.

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Every lesson is free. Pay only for exam packs.

One price per pack. Twelve months. No subscription.

  • Free

    $0/forever

    • Every lesson in every module — animation, exercise and quiz
    • Every practice problem, with hints and solutions
    • The first 2 lessons of a module without an account; a free account opens the rest
    • Progress synced across your devices, certificates for finished modules
    Start free
  • Most popular

    AWS exam pack

    from $4.99/for 12 months

    • Foundational $4.99 · Associate $6.99 · Professional and Specialty $11.99
    • Four timed practice exams per certification; the first one is free for everybody
    • Every option explained, with the lesson to revisit
    • One payment, nothing renews by itself. 14-day refund, no conditions
    See the packs

  • All AWS certification packs

    $74.99/for 12 months

    • All 12 AWS certification packs we sell or are writing
    • Bought separately: $97.88
    • Each exam's next version included when it changes within your 12 months
    • One payment, nothing renews by itself
    Get the bundle

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