 Hello everybody, welcome to my line talk session at the Center Infrastructure Management whose other single-source of truth for telco operation. My name is Thang Tran Van and my mentor is Vinh Nguyen Chak from VietTel Network and VietTel is a big hit telco in Vietnam. So the first thing I will explain is DCIM. DCIM is Data Center Infrastructure Management a tool or a software to manage all resources in Data Center. In my company, we extend DCIM to manage more resources. We manage not only the physical device but also the network device, logical device and other virtual device. For example, it could be a virtual machine, lock balancer, firewall and some service. Thus, every big company will have a database or quality cluster. So we decide DCIM to have many goals. So the first thing we make DCIM to digital infrastructure and is a part of my company vision digital transformation. And we build DCIM to be a source to save information, configuration for many devices. And we make DCIM to make ITVCT depth of depth, manager, CTL and many roles become closer. As a main purpose, we build DCIM is will become a sort of truth for provide information for other system. You can see in it here DCIM to provide information to monitoring device inventory, network automation and many, many other stuff. So how we do that? And we use and customize networks. And next book is an infrastructure resource modeling IRM tool designed to empower network automation used by thousands of organizations around the world. And next book is open source and currently very, very active and has many contributors over the world. And we customize the network to build DCIM to manage thousands of devices and virtual machines. And we manage not only the physical device but also the logic code device and virtual device. So to do that, we use a lot of available features on this book. Besides that, we modify and add more features. For example, when we manage the firewall, we must standardize the model to fix all the firewall. Because you know the firewall has many providers, many types and versions. And besides that, we must link the firewall model to other available model on the network like IP address, device and tenant. The second thing we use the discovery service is this service is our network. And if we get information, get configuration, get secret forum, next book via IPI, then it will run any script like patent code, Ansible task, some command line, SSS, Tennis and some other protocol to get information. Then we passing and modeling and comparing the data. And finally, we put the data back to the next book. So the next book is always has the current state data. And it will make the next book a sort of truth to other system. So, it's a quick look about our DCMI solution. If you have any questions, please contact me via github, Facebook or email. This is the end of my learning session. Thank you for watching. Have a good day.