In Illustrator CC 2017, there are a few ways to vectorize an image. The first way is to use the Vector tools. The Vector tools allow you to create lines, shapes, and other objects that can be used to create illustrations or graphics. The second way to vectorize an image is by using the Pathfinder tool. This tool allows you to draw lines and shapes in a variety of directions. You can also use this tool to add details and shadows to your images. The third way to vectorize an image is by using the Freehand tool. This tool allows you to create free-form drawings without any constraints. You can use this tool to create any type of illustration or graphic design you want.