ICT business refers to business activities related to Information and Communication Technology (ICT).ICT business covers a wide range of areas, combining Information Technology (IT) and Communication Technology (CT), and plays an important role in the operation and development of modern businesses and organizations. Specifically, ICT business generally includes the following areas:

1. Network construction and maintenance:

   - Designs, builds and maintains internal corporate networks, including local area networks (LAN), wide area networks (WAN) and wireless networks (Wi-Fi).

   - Provide network optimization, network security, load balancing and other services to ensure the efficient operation of the network and the security of data transmission.

2. Data center services:

   - Provision of data center construction, management and maintenance services, including server hosting, virtualization and storage solutions.

   - Provide cloud computing services such as Infrastructure as a Service (IaaS), Platform as a Service (PaaS), Software as a Service (SaaS).

3. Communications systems integration:

   - Design and deployment of enterprise communication systems, such as IP telephony systems, videoconferencing systems, call center solutions, etc..

   - Provide unified communications solutions, integrating voice, video, messaging, conferencing and other functions to support telecommuting and cross-regional collaboration.

4. Enterprise informatization construction:

   - Provide development, customization and integration services for enterprise information technology software such as enterprise resource planning (ERP), customer relationship management (CRM) and supply chain management (SCM).

   - Provide data analysis, data mining and big data solutions to help enterprises make data-driven decisions.

5. Network security and information security services:

   - Provide information security assessment, risk management, intrusion detection and protection, data encryption, identity authentication and other services.

   - Implement security policies, configure firewalls, VPNs, etc., to prevent network attacks and data leakage.

6. Cloud computing and virtualization services:

   - Provide cloud-based solutions, such as the design and deployment of private, public and hybrid clouds.

   - Provide virtualization technology services, such as server virtualization, desktop virtualization, storage virtualization, etc., to optimize the use of IT resources.

7. Internet of Things (IoT) solutions:

   - Provide IoT platforms and solutions to connect and manage various smart devices, collect and analyze data, and optimize operations.

   - Provide IoT integration services in the fields of smart home, smart manufacturing and smart city.

8. IT outsourcing services:

   - Provide IT system outsourcing services, such as technical support, software development, system operation and maintenance, and IT consulting.

   - Provide IT service management (ITSM) solutions to help enterprises optimize IT service processes and improve service quality.

9. Mobile application development and management:

   - Provide mobile application development, testing, publishing and management services to support enterprise mobile working and business development.

   - Provide mobile device management (MDM) solutions to ensure mobile device security and compliance.