Answer
AOT compiles Angular templates to optimized JavaScript during build, not in the browser.
Benefits: faster startup, smaller bundles, better security, and earlier error detection. AOT is the default mode for production builds.
Quick Answer
AOT compiles templates and decorators at build time. Why required: JIT (Just-In-Time) compilation in the browser is slow and ships the compiler as part of the bundle (adds ~40% to bundle size). AOT produces smaller, faster apps - the template compiler isn't needed at runtime. Also catches template errors at compile time. Always use AOT in production; Angular makes it the default.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ