RNA processing is a crucial step in gene expression. It involves several modifications to the primary transcript, including splicing, capping, and polyadenylation. Alternative synonyms for RNA processing include RNA maturation, RNA modification, and RNA editing. These processes ensure that the mature RNA molecule is stable, functional, and capable of performing its biological function. While RNA processing occurs naturally in cells, it can also be manipulated for therapeutic purposes. Advances in RNA processing technology, particularly in gene editing, have led to new treatments for genetic disorders and cancers. Regardless of the terminology used, RNA processing is an essential process that regulates gene expression and underpins the complexity of life.