Of course, there is plenty of variation within this category.

Business attire: You should dress as someone might for a client-facing job.It’s often just a matter of wearing nicer shoes, a snazzier top or pants that aren’t blue jeans (though denim is fine with the right kind of shirt - more on that later). Dressy casual: You should dress up, but only a little.

Sneakers, jeans and T-shirts are all acceptable, and even encouraged.