<ul data-eligibleForWebStory="false"><li>High-Level Design (HLD) focuses on system architecture and major components, while Low-Level Design (LLD) delves into implementation specifics of each component.</li><li>HLD addresses the 'what' and 'why' of the system, serving as a blueprint for architects and stakeholders. LLD specifies 'how' to implement, offering precise instructions for developers.</li><li>HLD involves system context diagrams, data flow diagrams, while LLD includes class diagrams, pseudo-code, and detailed API specifications.</li><li>HLD is created early in the software development lifecycle, with LLD developed after HLD and before the coding phase, targeting different audiences.</li></ul>

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