I've read and have heard of both 'as per' and 'per' being used conversationally, both with the same connotation of either 'according to' or 'on authority of'
Examples:
"Tell Ron to start molding new rollers for the mecanum wheels, as per me"
"Per Mr. Crane, you need to start the molds for the new rollers."
They both establish the same context by setting that something should be done on the authority of someone else (or the speaker, per the first example (see what I did there?)). Or it acts as a way to cite a source of a statement, directive or fact in conversational speech.
My question is, what is, if any, the functional and syntactical difference between as per and per. If there are no differences, which is apropos to use?
Best Answer
Among meanings for preposition per, wiktionary.org includes
It defines as per as a preposition meaning "Consistent, or in accordance, with."
Taking Wiktionary as a guide, one can use either form with little difference in meaning, but I think some people will object to such use of per and others to such use of as per.
My preference is for per because most uses of as per that I've heard seem pompous and verbose.