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According to Wikipedia: "Observability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs. In control theory, the observability and controllability of a linear system are mathematical duals."
In simple words, it is how the system describes its internal state through its external outputs.
DevOps has been a hot topic for many years, but it's still common for organizations to feel overwhelmed by the complexity of automating their entire infrastructure and to get hung up on which tools to use.
An integrated set of DevOps tools for monitoring has the power to improve visibility and productivity, achieve higher-performing systems, and establish cross-functional collaboration. The right toolset is more than the tools themselves — it’s about developing the culture, discipline, and practices that come to define your product/service and your workplace.
Today, we'll cover some things that you might find quite useful in your everyday work. We'll go through some of the best practices for logging into AWS Lambda, and we will explain how and why these ways will simplify your AWS Lambda logging. Let's start with the basics. What is logging?
AWS Lambda is a service that will automatically monitor Lambda functions for you, and it will report the metrics via Amazon CloudWatch. In order to help you with resolving the function failures, Lambda logs will manage all requests by your function as well as automatically store logs that are generated by your code through Amazon CloudWatch Logs.