front-end

adjective
1
directly used by a user, and allowing the user to use other devices or programs
رابط کاربری
compare back-end(2)
2
relating to the part of a vehicle that faces forward
جلویی, مربوط به بخش جلویی
The vehicle sustained significant front-end damage.
3
paid or charged at the beginning of an act of buying or selling
پیش پرداخت, پیش‌پرداختی
a front-end fee/payment