> For the complete documentation index, see [llms.txt](https://docs.talentlayer.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.talentlayer.org/readme/basics.md).

# 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 
* **TalentLayerService:** Universal Services & Proposal System
* **TalentLayerEscrow:** Escrow & Dispute System

Together, these systems make cross-platform transactions possible.