The document elucidates the distinctions between observability and application performance monitoring (APM), emphasizing four key differences. Firstly, it discusses how observability provides comprehensive insights into complex distributed systems, enabling deeper understanding beyond predefined metrics. Secondly, it highlights observability's focus on exploring unknown unknowns, allowing for proactive problem-solving and root cause analysis. Thirdly, the document underscores observability's emphasis on data context, enabling correlation and analysis across various data sources for holistic insights.

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