 Hello everyone, my name is Phat. I'm a software developer from Ho Chi Minh City, Vietnam and today I'm so happy to be here to present to you a very interesting project that I've been working on. The project is upstays. I've been working for 2 years almost and what this project is interesting to me, we call upstays the sea performance platform. It is an online venue where our artists can do performance using digital media and we, the audiences can watch their show using our browser. We don't have to install anything, we just open Google terms of iPhone and now go to upstay.live, visiting their show and you can see their beautiful works. Like this one, I've been ready for you, reflect on the mobilization here. I will show you this stage. I created this on the International Women's Day to celebrate it from a small gift to our upstay from the gift. When you log upstay, you will see a login form. If you are an audience, you can enter your username. In this case, I have an account and I will use it to login in. When a player log in, you can see on the left, we have the tools for our player to do beautiful works. We have meeting room using GCMeet and we can play a stream using RTMB and broadcast them using OBS Studio. We can also roll on the stream like this. I'm not very good at painting and we have a chat box for players. If you love their performance, you can send them some cards and we will pause the music to speak. That's something about upstays. It's a wide... I don't know. But it's very special for an official project. So what's behind on these magical works, you may wondering. At the center of everything, we have the MQTT broker. You can think of MQTT as a multiple web software brought to one monolithic software. MQTT broker have multiple topics where you can supply tools. So on this day, we have chat topic, port topic, audio topic, message topic etc. Let's see how live performance can work. Beside that, we have the bad end system built with Python class in Raffin. We use Raffin for communications. We have Vue.js on the client to do this animation with Vue. We also have a GC Media Server to do the meeting on the stage. I think that's almost everything in upstay. So I hope you like upstay and visit our stage, our performance one day if you have the time. And if you would like to be part of us, we always welcome new developers or artists or someone just want to have a visit. Thank you for listening.