Exciting news for C# developers! Microsoft has just rolled out a game-changing feature in .NET 10 Preview 4: file-based apps! Inspired by the simplicity of scripting languages like Python and JavaScript, this new capability lets you run a stand-alone C# file directly with just a simple command: `dotnet run app.cs`. No more hassle of setting up a full project or scaffolding an entire application just to test a quick snippet or experiment with ideas. This streamlined approach is perfect for rapid prototyping and boosts productivity, allowing you to focus on what matters most—your code! Embrace the ease of development and unleash your creativity with this fantastic update!