Array merging is the process of combining two or more arrays into a single array. This is often done in programming to consolidate data for easier manipulation and analysis. The resulting array can contain elements from all the original arrays, maintaining their order or interleaving them based on specific criteria. In many programming languages, such as Python or JavaScript, array merging can be achieved using built-in functions or methods. For example, the concat method in JavaScript allows developers to merge arrays seamlessly. This technique is useful in various applications, including data processing and algorithm development.