Desktop publishing software (DTP) are tools that let you create printed assets and publications. Magazines, brochures, posters, and newspapers are all designed in DTP software. Desktop publishing tools help to set the layout and arrange texts and other graphics on a page.
One reason for their popularity is, they help ease the creative process - it's a lot faster and easier to layout a page in desktop publishing tools. They also ensure accuracy, so your initial idea looks and feels identical when it's produced, matching any brand guidelines.
If your frustrated by the current production process or want new ways to bring your media to life, then you'll need to decide which DTP software is best for you. There's no single answer. It depends on experience, skill, budget, and what you're designing. Adobe InDesign has remained one of the most popular choices, but there are plenty of best Adobe InDesign alternatives out there, including the ever-enduring QuarkXPress.