back-end
adjective [ before noun ]
uk/ˌbækˈend/relating to the final parts of a process or project, or to money that you pay when you sell a financial product:
"Back-end logistics" refers to product delivery and payment collection.
Back-end charges will apply when you sell your share in the fund.
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front-end
IT
relating to the part of a computer program or system that the user does not see or use:
We devised an automatic processing system with a back-end database.