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It is essential to have a balance between security and accessibility to ensure that staff and services can access the data they need while also protecting sensitive information data.

The arrow function is a new way to write anonymous function expressions introduced as part of the ECMAScript 2015 specification (ES6) of JavaScript.

The main difference between using var and let is the scope and whether or not the variable is hoisted.

JavaScript variables and functions are not declared at the point of use. Instead, they are moved to the top of their scope hoisted and assigned a default value of undefined until they're reached in code.