The preferred way (also the easiest, quickest and most cost-effective) is for me to take your brief (record a few dummy lines if required), and then self-record and self-direct from my personal studio. Afterwards, I will send you the files via WeTransfer – a free service that allows users to send and receive large attachments.
The final way is to record at a studio of your choice. This potentially the most time-consuming and expensive for both the artist and the client, due to the additional costs involved in getting to and from, and hiring, an external studio.
Please see below for a list of professional equipment I use.