Architectural shingles are also called dimensional or laminate shingles. They have a different look from the traditional 3-tab shingles in that they come in various shapes and sizes.
Additionally, they have a more dimensional look to them much like a wooden shake or a tile has dimension. You could conceivably get the benefits of an asphalt shingle roof, which is fairly low-maintenance, with the look of a cedar shake roof with an architectural shingle.
3 Tab Shingles
Traditional shingles are the 3-tab variety. They are the shingles people most often associate with asphalt roofing. They come in a single tab shape and lie flat to the roof decking and create a clean shape with neat-looking lines on your roof.