 Hi everybody, this is Ron from Tencent. Even if we participate several times, the open infrastructure meets. And this is our first time just to do the presentation online through the video. So this year our main goals of the Tencent T-Stack is just about hybrid cloud. So this time we present several ideas of hybrid cloud ecosystems to reform the future of digital infrastructure. If we talk about digital transformation and we identify three main requirements. First, in terms of infrastructure, infrastructure should be based on cloud. This is one of the major ideas. And maybe just one cloud. And in some scenarios, we need several clouds. So secondly, we try to understand that we need a uniformed management modules or the management of portals that can manage different clouds together. And once we want to launch a task, launch an application, we should do the orchestration in a flexible manner. Sometimes we call it orchestration, sometimes we call it just a scheduling in a flexible manner. So through this unified management module, we can manage several clouds together. And in terms of application, they understand that they have only one cloud. This is the idea about the multi-cloud management systems. And once we have this multi-cloud management systems, secondly, we try to move or to migrate the enterprise applications on the cloud. Sometimes we call it the upgrade of enterprise IT system. And this is the third requirement that we identify. So together, first, the infrastructure should be based on cloud. Secondly, we need a unified management modules for flexible scheduling. Third, we need to migrate IT systems of the enterprise, which we try to upgrade. This is the three main requirements of the digital transformation. And in terms of Tencent, we are a little spatial and different from other companies because in Tencent, at the same time, we build our private cloud and we are one of the biggest public cloud providers in the market. So we have at the same time the private cloud and the public cloud. Several years ago, we have already launched the hybrid cloud architectures in terms of Tencent. We have a private cloud based on T-Stack and we have the network architecture or network modules that can bring together the private cloud and our public cloud data centers. So through this philosophy, we launched the hybrid cloud several years ago and most of our internal applications are based on the hybrid cloud mode. If we take an insight look at this architecture, it is a standard three-layer architecture and in the base layers we have the basic virtualized resources. In terms of the servers, we have a standard 86 servers based on Intel. Also, we have our self-designed servers, we call it Xinxing Hai, which is based on AMD. And then two years ago, we also launched another approach that used ARM servers instead of the X86. This is the ARM server that will usually some kinds of ARM version 8 servers, which can provide almost the same functionalities for the cloud platform. And in terms of the storage, it's a standard virtualized storage, which can be based on the distributed storage or the centralized one like the FC-SAN or IP-SAN. And in terms of network, we have two approaches, even if either the software based SDN solutions or hardware based SDN solutions. And upon this basic virtualized resource layer, we built two categories of cloud, the public cloud and the private cloud. The public cloud is a standard public cloud that you can see in the Tencent public cloud platforms, which has the CVM GPU scores or VPC, etc. And the private cloud, it's the Tencent cloud C-Stack solutions that we have already presented in previous summits, so I don't try to detail this part. And then we have the dedicated line that can access or that can bring together, link these two clouds together. Upon these cloud layers, and we have our, if we call it the full ecosystem, it means that we should also have the parts and the SAS services. For the parts services in public cloud, we have the TKE, which is for the container and Kubernetes. And the private cloud, we have a similar solution called TCEM platform. And in terms of the microservice framework, in the public cloud, we have the Tencent cloud mesh and in the private cloud, we have the TCEM mesh. Also, you can see that in the whole picture, we have the database, the middle well, the data solutions, the AI solutions, but also some SAS solutions like WeCom and WeChat, etc. All these things can, all these things are divided into two categories, the solution for the public cloud and the solution for the private cloud. And all these together, we built a whole picture about the full stack for ecosystem hybrid cloud. So in terms of the computing power for the hybrid cloud, inside of public cloud, the standard computing, as I said, are generous computing like the ARM, the AMD, the Intel, the GPU, VGPU, FPGA, etc., upon which we have several categories of physical servers, the standard one, the high IO ones, the physical server dedicated for the big data or some computing-intensive physical servers, and upon which we have the standard CVM or the CVM dedicated for the IO for big data, etc. This is a part for the public cloud. And for the part of private cloud, firstly, we provide a solution. We call it one cloud multiprocessor. This is a solution that I will detail later. And in through these solutions, we have one cloud platform which can integrate resources based on different processors, architectures like ARM or like the MIPSX interest. And upon this layer in the private cloud, we have the multi-cloud management platform. This means that it's a single platform that can manage several cloud together, several cloud which is based on different providers, based on different customers. Also, we have several cloud which can be even if the local private cloud or the public cloud. So you can manage public cloud together with the private cloud. And upon which we have a standard ISPAS solution which integrates all these services together at the same time for the public and for the private cloud. And at the end, once we have this whole four stack, we design and provide dedicated private four stack solutions for different sectors, just like the sectors as a financial sector, the energy sectors, the government sectors, etc. These are all the different solutions, sector dedicated solutions which based on the four stack. Now, I detail a little about the new solution that we provide this year. We call it the one cloud and with multi-processor solutions. One cloud means that the one private cloud is the key stack solutions which at the first time it can integrate different physical processor solutions, the x86 solutions, the arm solutions, even if the arm process from different providers and the MIPS servers, etc. Based on these solutions, these processors, our t-stack can provide different resource pools with which each resource pool can can manage one kind of process architecture. And this is the part, this is the layer of the processors upon the processors. So we can have one cloud which manages several different kinds of physical servers in the virtualized solutions, means that the KVM, the standard KVM, the Zen, also the VM well cloud and sometimes we need to manage the open power, the IBM open power servers and through the open stack arrangement, we can also manage the bare metal solutions. And upon the physical or the virtualized layers, we have the control layers. In the control layer, we use one cloud management module to manage different cloud platforms from different providers. And in the real case, we have one management modules which can manage a platform from VM well, from the other companies, etc. So from the user side, when they want to deploy their applications on the platforms, they only see one models, one management modules. And through these management modules, they can select a different cloud provider's platform. And this can bring a very user friendly solutions for the application that the user want to deploy. In terms of the capacities, so the cloud service platform, we have the public cloud, we have the private cloud, we have the VPN or dedicated communication channels which can bring them together. And upon this, the management services are almost the same, means that for the resource management, for the organization structure, for the meeting and the building services, for the permission management, for life cycle management, user management, monitoring and the armies, all the operation management, all these are together. And the hybrid solution, the hybrid architecture brings all these together, they try to provide a unified resource management portals with the unified platform capacities, there's all the capacity that I presented in the picture. And they can unify the data governments. So from the application of found and user side, they only see one portals, one management. And the resource that deployed it on the cloud is distributed through different cloud, different servers. This is why we think that the hybrid cloud can bring a lot of advantages from the previous model. Here just a big picture about how user can see it. As you can see, there's only one portals user can see. And through this portals, they can manage different cloud and they can have different capacities, platform capacities and even if their data are governed through a unified mode. Now, another approach, when we talk about hybrid cloud, I think from 2011 or 2012, we started to talk about hybrid cloud. At the first stage, when we talk about hybrid cloud, it's just like we call it the resource layer hybrid cloud. So we can manage and bring all the different resource from different cloud together in one platform. This is why we call it hybrid cloud. And now, as we all understand, the cloud moved to the second era, we call it the cloud native. Through this, we also need a hybrid cloud solution, not only for the resource but also for the application, the cloud native application. And this is what we do this year. Through our unified container engines, we can bring all the applications together through a hybrid mode. And another very important thing is about the service capacities, the operation, the technical support. For hybrid cloud solutions, these are done in three steps. The first step, we call the frontline steps. So we have our technical support partners with our teams together in the data center. We try to do the IDC maintenance. We had hardware and network save and platform maintenance together. It's the frontline operation. And then we call it the midline operation. It's some kinds of core centers, which can which will help to resolve some dedicated, difficult questions and issues together through the midline operation. Then we have the backline, the expert team, which can help to resolve the very difficult problems and issues with the operational safeguard. Also for the end users or for the users, we provide the training and certification services. This means that you have a standard trainings that you can follow. If you pass the exam, you can have the certification. It helps you to identify the high quality expertise that can help us to bring and to deployment and to mend them these hybrid solutions together. This is what we present about the hybrid cloud solution of Tencent and all trust Tencent cloud things we can provide a safe, standard and mature solutions for our partners. Thank you for your attention.