provider side; sender (in a transaction)
Refers to the party that provides or sends something in a transaction, contract, or exchange. Often contrasted with 受取側 (recipient side).
In this transaction, the provider side has an obligation to disclose the information first.
We exchanged a contract between the provider side and the recipient side.
Refers to an individual provider, while 提供側 emphasizes the side or party in a relationship.
Compound of 提供 (provision, offer) and 側 (side, party).