The meaning of cloud migration refers to the cloud environment process that relocated IT resources such as applications, data, storage, and services from other cloud providers such as local data centers and private cloud providers to cloud computing service providers. The purpose of cloud migration is to fully use the flexibility, scalability, availability, cost benefits of cloud computing in the future. In order to meet the needs of enterprise organizations, improve the management and performance of enterprise or organization IT infrastructure. With the continuous development of cloud computing, there are more and more cloud migration. As follows, there are more and more challenges facing cloud migration, mainly including the following points.

　　data migration:

　　Data migration is a key aspect of cloud migration. Moving a large amount of data from the local environment to the cloud may lead to long data transmission time, increased bandwidth cost, and data consistency and integrity. Organizations need to consider how to migrate the most effectively.

　　Application restructuring:

　　Some applications may need to be reconstructed when migrating to cloud to adapt to the characteristics of the cloud environment. This may involve adjustment and optimization of application architecture, databases, storage and networks.

　　Safety and compliance:

　　Maintaining data security and compliance in the cloud is an important issue. Organizations need to ensure that their cloud environment meets regulations and safety standards, and implements appropriate security measures, such as authentication, access control and data encryption.

　　Performance optimization:

　　Organization needs to optimize the performance of applications running in the cloud. This may require adjustment of computing resources, network bandwidth, database configuration, etc. to ensure that the application runs well in the cloud environment.

　　Cost management:

　　Cloud migration may lead to new cost structures, including costs such as computing, storage, network and license. Organization needs to implement effective cost management strategies to avoid unnecessary expenses.

　　Training and skills:

　　Cloud migration may require internal teams to gain new cloud skills and knowledge. This may involve training and education to ensure that the team can effectively manage the cloud environment.

　　Monitoring and management:

　　Organizations need to effectively monitor and manage the cloud environment to ensure performance, availability and security. This includes using cloud management tools and services to manage resources and applications.

　　Cultural change:

　　Cloud migration may require the organization of internal culture to adapt to the agility and elasticity of cloud computing. This may involve the adjustment of the organizational structure and the changes in the workflow.

　　Choose cloud service providers:

　　It is also a challenge to choose the right cloud service provider and service model. Different cloud providers provide different services and characteristics, and need to carefully evaluate to meet business needs.

　　Cooperation and communication:

　　Cloud migration usually requires cooperation and communication between different departments and teams. Ensure that all parties clarify their tasks and responsibilities to avoid confusion and conflict.

　　Cloud movement can undoubtedly bring more advantages, such as reducing IT management and operating costs, improving flexibility and scalability, improving business continuity and availability, and obtaining higher resource utilization. However, the challenges faced by cloud migration above are also issues that need to be faced at the moment. It is necessary to ensure the success of migration and the effective management of the cloud environment by continuously detailed planning, strategy, and execution. Cloud migration is a complex process that needs to be carefully planned, executed and managed. Organizations need to face a variety of challenges and make necessary adjustments and adapts to ensure the success of cloud migration. This also includes continuous optimization and management cloud environment after migration.