Answer
process.env is a built-in object providing access to environment variables.
Quick Answer
process.env is an object in Node.js that contains all environment variables set in the system or .env file. process.env.PORT gives you the port to listen on; process.env.DB_URL gives the database connection string. Never hardcode secrets in code — read them from process.env instead.
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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