## Introduction to One Union
The real estate market is constantly evolving, but the process of searching for information, connecting needs, and coordinating transactions remains inconvenient. Information is often scattered and difficult to verify; buyers, owners, brokers, and service providers lack a common platform for effective connection and collaboration.
One Union is built as a technology platform connecting the real estate ecosystem, helping parties access information, connect with the right needs, and coordinate more conveniently in the buying, selling, renting, brokerage, and use of related real estate services.
## The Value One Union Delivers
One Union is progressively digitizing activities within the real estate ecosystem, from posting listings, searching, connecting, exchanging information to managing inventory, customers, and transaction opportunities.
The platform aims to help users:
* Access real estate information more conveniently.
* Connect the right people, with the right needs, at the right time.
* Reduce search and information exchange time.
* Increase transparency in the connection and transaction process.
* Support brokers and teams in managing their work more efficiently.
* Connect service providers related to housing and real estate.
## User Groups on One Union
One Union is developed to serve the following main user groups:
* People who need to buy or rent real estate.
* Owners who need to sell or rent real estate.
* Real estate brokers and brokerage teams.
* Service providers offering support services such as legal, financial, construction, renovation, interior design, and related services.
## Key Features
* Post and manage real estate information.
* Search for real estate by needs and location.
* Connecting buyers, tenants, owners, and brokers.
* Managing inventory, clients, and transaction opportunities.
* Direct communication between users during consultations and transactions.
* Voice and video calls to support consultations, information verification, and negotiations.
* Connecting real estate support service providers.
## Incoming Call Feature
One Union provides direct voice and video calls between users to facilitate communication, consultation, and coordination during the search or transaction of real estate.
When a real call comes to a user's account, the application needs to display a call notification even when the device is locked or the application is running in the background. Therefore, One Union uses full-screen notifications to display the incoming call interface and allow users to accept or reject calls promptly.
Full-screen notifications are only used in the following cases:
* An incoming voice call from another user.
* An incoming video call from another user.
* The call is made through the One Union communication feature.
This feature is not used to display advertisements, marketing content, promotions, or notifications unrelated to the call.
Infrastructure platform connecting real estate resources.