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Node.js is a dynamically typed programming language and single-threaded. This can easily result in memory leaks and high CPU loads. Monitoring provides a way of preventing the loss of customers and stopping you from wasting time. The faster your product is, the more customers you’ll have. More importantly, user satisfaction will be higher. Time is money, and preventing downtime, loss of resources and saving your product from performance issues will save you money in the long run; which is and should be the core focus of every business — to make money.