Usage and Grammar

Q. Greetings. I’m working with the Knowledge Management team in an IT company, responsible for content management and development. My supervisor advised me to write only per, not as per in a sentence. Is it as per the Chicago Manual of Style? Please oblige me with your reply.

A. Although as per has long been considered redundant and a violation of good English (since per is Latin for “by means of” or “through”), it has also long been standard parlance, especially in business contexts. I would edit it out of more formal prose, however.