When you need to create a corporate asset that will look as good on the Web as on a billboard, you need an illustration program that handles vector graphics.
Scalability is the key to the value and power of vectors.
Vector graphics or illustration programs have always used an object-oriented approach to computer graphics, allowing you to draw outlines that define objects, then to fill them with a paint or a pattern. You can perfectly render these outlines at any size because they are formed by a mathematical model of points and curves, not by a grid of filled-in square pixels the way bitmaps are created. New features we found in this category include multicolored graduated fills. Primitives such as polygons, stars, and spirals have become commonplace. Layered interactive graduated transparencies add depth never before available, and you can convert vectors to bitmaps within the vector graphics file.