Ecosystem

Application Layer

- This is the layer where services for each participant are implemented.

- The VZ platform provides interfaces to interlock with service components according to the participants' applications.

- In the case of EV individual drivers or fleets, it interfaces with the vehicle manufacturer service server or provides an interface to the fleet's self-operated application to receive driving records to the FMS.

- CPOs or non-CPOs can access charging information and use charging through the interface provided by each operating platform and e-Roaming.

- STO, RWA provides the Register server interface to register STO's information on the VZ platform.

- Provide external interfaces to provide information to carbon offsets, insurance companies, government research organizations, etc.

Service & Component Layer

- Provides actual services related to each participant.

- It stores the information received from each participant in the blockchain and distributed DB in the core layer.

FMS (Fleet Management System)

- It interfaces with the service provided by the vehicle manufacturer or interfaces with the vehicle control service owned by the logistics company itself to receive operation information data and store it in the blockchain and distributed DB in the core layer.

MSP (Mobility Service Provider)

- Provides charging services to electric vehicle drivers and helps each participant CPO and non-CPO to generate revenue to expand charging infrastructure.

- Provides charging payment to the VZ platform and stores information on charging usage history and payment through the core layer to reward VZP for charging users.

What is e-Roaming?

e-Roaming is a technology and service concept that enables electric vehicle (EV) users to seamlessly utilize different charging networks. It facilitates infrastructure expansion by connecting participating CPOs and non-CPOs with MSPs, allowing users to use multiple CPOs.

It ensures compatibility and integration among charging station networks through interconnection and data exchange between EV charging station operators and service providers.

Register

STO and RWA investment information is stored in the blockchain and distributed DB on the core layer through Register.

The blockchain stores information on each STO, RWA basic information, and operating revenue, and the distributed DB stores information on each charging record and revenue.

Data Service

A data service is a piece of software or system that is responsible for providing, managing, and processing data. It acts as an intermediate layer that allows different applications or systems to interact with data. Data services are an important concept in many areas and contribute to making data more accessible and efficient, such as providing an external interface when providing information to external entities such as carbon neutrality or insurance companies.

Core Layer

- It stores information managed by the VZ platform.

- Basic information such as user personal information, STO, RWA, and contractual relationships are stored on the blockchain using smart contractors.

- Auxiliary data related to each participant, such as driver's driving information, driver's and CPO's charger usage, etc. are stored in the distributed DB.

- The data stored in the distributed DB can be provided externally by the insurer or country as needed for policy or business purposes with the participant's permission.

Distributed Database (DDB)

DDB stands for **Distributed Database** and refers to a database system in which data is stored distributed across multiple computer systems. These systems store and manage data on servers or nodes that are distributed across multiple geographic locations over a network. Distributed databases are commonly used to improve the availability, performance, scalability, and fault tolerance of data.