Easy to Learn
TypeScript and C# are both from Anders Hejlsberg at Microsoft and share a similar design and feel familiar; if you know one, it's easy to learn the other.
TypeScript is Like C#A Backend Guide
If you already know TypeScript, then learning C# is easy! This guide walks you through the similarities (and differences) between TypeScript and C#.
Fast and Performant
.NET is a multi-threaded runtime capable of higher throughput compared to JavaScript based frameworks (often an order of magnitude difference!)
Stable and Secure
Tired of half-baked NPM packages? .NET's ecosystem has many mature, battle-tested libraries that are free from the types of attack vectors in JS.
Batteries Included
Many common packages that might be needed from NPM are included in the .NET standard libraries from Microsoft which are also professionally maintained and patched by Microsoft.