What are the aspects of China's enterprise e-commerce network infrastructure is insufficient?

Establishment of a modern e-commerce system, which consists of the following three components: e-commerce application system - the establishment of Internet-oriented e-commerce electronic transaction application system to expand the business of enterprises. Establishment of customer relationship management application system to support its customers. Establish supply chain management applications to collaborate on business cooperation. Establish enterprise resource planning applications to optimize internal operations. Establish multimedia distance learning applications to improve employee quality. Network Connectivity--Enable customers, business partners, and employees to access the enterprise's e-business system at any time and place in any way, i.e., unlimited network connectivity. Network architecture - to establish a feature-rich, usable and easy-to-use, efficient and low-cost and secure network architecture system. Building a good e-commerce network environment can be divided into two directions: first, the optimization of network infrastructure; second, load balancing and redundancy backup of server groups, the former network infrastructure requires a large number of Layer 2 and Layer 3 switches to achieve, and the latter server load balancing requires Layer 4 to Layer 7 switches based on a variety of different applications to play a variety of different roles. In the past, WANs were mostly connected by low-speed connections. E-commerce emphasizes fast response and higher bandwidth, so in addition to upgrading the speed to POS 155M, 622M, or even adopting long-distance Gigabit Ethernet, multimedia Multicast multicast capabilities, backup capabilities, and support for more routing tables and larger network environments are also needed

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