Recently, IBM announced the suspension of the Lotus brand, and the Exchange business opportunities will be greatly enhanced in the future. Recently, I was assisting a company in transferring emails and free and busy information from Lotus. before assisting them, we had to do some POC work to help customers upgrade? It is estimated that many friends may feel a little surprised. What does POC mean? The full name of POC is Proof of concept, which is the process of building the platform based on the requirements of the customer environment. POC has two main functions: 1. verify whether the solution we provide to the customer meets the customer's authenticity requirements, and whether the architecture meets the customer's expectations? This is the architecture that needs to be verified in the POC phase. Www.2cto.com 2. exercise the technical team, and our technical team cannot be solid forever. Can our newly recruited personnel quickly meet the expectations of the enterprise organization, and can adapt to the role of Project executor in the team as soon as possible. The entire POC process will be tested based on the actual architecture. We will write these chapters as projects, and hope you can get your own knowledge in this project! I also hope that this knowledge will help you understand the project knowledge and infrastructure knowledge!