Array manipulation involves performing various operations on arrays to achieve desired outcomes. Common manipulations include adding, removing, or updating elements, and more complex operations like merging, slicing, and filtering. Techniques for efficient array manipulation are crucial in programming, as they can bamboo sheets king significantly impact performance and memory usage. Arrays can be manipulated using built-in methods in many programming languages, such as push(), pop(), shift(), unshift() in JavaScript, or using library functions in languages like Python and Java. Mastery of these operations is fundamental for effective data handling in software development.