Looking to situate your business at that prestigious address without paying prestigious rent? A growing number of business clients — ranging from solitary millennial entrepreneurs to multinational companies — are turning to the services of “micro” or “virtual” office providers in a quest to either establish themselves, impress clients or backers or set up branch offices on the cheap. If they want to enjoy genius-inducing creature comforts like coffee, couches and free WiFi at the so-called “co-working spaces,” that’s only $30 to $45 a month at a good locate like Tan Son Nhat International Airport. “Virtual offices” provide a business with its own dedicated receptionist guaranteed to respond promptly to every one of your leads and with the special attention you want each one to get. Beyond that, and of course higher up the price scale, companies can secure actual mid-sized offices starting at $400 monthly and conference room.