Vector vs. Raster
There are two main types of design software used for the printing industry. The first is called "raster" or pixel based imagery. You may be familiar with Adobe Photoshop, which is a raster based image editing software. The other type is called "vector" imagery. Vectors are mathematically defined shapes, which can be reproduced at any size with no change in quality. As you can see by the different levels of zoom, pixel based images lose quality when expanded, or magnified. Whereas the vectors recalculate the curves to maintain the integrity of the shape.
Vector graphics are basically made up of individual lines and not just one flat picture. We can convert regular images to a vector image for a fee.