noun
customer service smile; professional smile
A polite, businesslike smile used in customer-facing roles, often implying it is not a genuine personal smile.
彼女の営業スマイルは完璧だけど、本心はわからない。
Her customer service smile is perfect, but I can't tell what she really thinks.
疲れていても、お客
Even when tired, I never drop my professional smile in front of customers.