# TalentLayer's Functions

The TalentLayer Core Protocol is the underlying tech behind the TalentLayer Web 3 SDK and API.

The TalentLayer Core Protocol is composed of the following key modules:

* **TalentLayerPlatformID:** Marketplace configuration (fees, dispute, access)
* **TalentLayerID:** Worker and hirer identity
* **TalentLayerReview:** Mutual review&#x20;
* **TalentLayerService:** Universal Services & Proposal System
* **TalentLayerEscrow:** Escrow & Dispute System

Together, these systems make cross-platform transactions possible.&#x20;