If you've ever wondered what's the process behind building an SDK or library for public use, then you might also be interested in how to do it for more than 10 different technologies and platforms, while serving billions of users all over the world! In this session, we'll go talk about how Stream started with its Chat product, which SDKs we built initially and how and what we had to do to scale our process to serve all modern platforms and technologies. We'll talk about the obstacles we found while building those SDKs and what we did differently for our Compose SDK, which served as a prototype that we applied to several other platforms. All of this will give you insight into how the startup world works and give you important tips to build your own product.