Hello,
It is a pity that Maggie didn´t give any context because I have the same exact question but without any context, so I googled "As a matter of best practice" and bumped into this thread in my beloved wordereference, but, in my humble opinion Maggie should have given a bit of a context, to see the sentence, for others to know better.
My concern is that I know you can say "As a matter of fact", but then I thought: How about others: "As a matter of...."
I am used to "as a matter of fact" but would love, if possible, to have a bit more context about this thread.
This thread comes in handy but, I repeat it: Don´t say any sentence, any context, so, it is a bit pity.
Thanks in advance!