This is the 904th most frequent Japanese word.
新規
"New" or "newly created."
The word 新規 (shinki) is used here as an attribute to 顧客 (kokyaku, customers), specifying them as 'new'.
新規顧客には特別な割引が提供されます。
New customers are offered special discounts.
In this sentence, 新規 (shinki) is used to describe 作成 (sakusei, creation), indicating the creation of something new.
新規作成ボタンをクリックしてください。
Please click the 'Create New' button.
The term 新規 (shinki) qualifies 市場 (shijou, market), showing that the market is a 'new' one the company is targeting.