What is the difference between "cloud host" and traditional "IDC server"?

Cloud host and traditional IDC server are two different server hosting modes, and the specific differences are as follows:

Architecture and deployment mode: Traditional IDC servers are based on physical hardware devices and need to be purchased, configured and maintained. These servers are usually located in the data center (IDC), and users rent the whole physical server for use. Based on virtualization technology, cloud host divides a physical server into multiple virtual machine instances, and each instance provides services as an independent cloud host.

Flexibility and scalability: The cloud host has high flexibility and scalability, and users can adjust the resource configuration of the cloud host at any time according to their own needs, including CPU, memory and storage space. Traditional IDC servers usually need to be purchased and configured in advance, and new servers need to be physically added when expansion is needed.

Resource sharing and cost performance: the cloud host is multi-tenant, and multiple users * * * share the resources of a physical server, so they can allocate resources flexibly as needed. This * * * sharing mode makes cloud hosts have higher resource utilization and cost efficiency. The traditional IDC server is exclusive, and each user rents a complete physical server, so the resource utilization rate is relatively low.

Management and maintenance: Cloud hosting providers are responsible for the management and maintenance of server hardware, including hardware failures and network problems, and users only need to pay attention to the management and maintenance of virtual machine instances. Traditional IDC servers usually require users to manage and maintain their own hardware devices.

Security and reliability: Although both traditional IDC and cloud host have certain security measures, their security and reliability may be higher due to the centralized management and professional operation and maintenance of cloud host.