Designing C# Applications with Span‑First Principles

The article introduces the concept of Span‑First design in C#. It explains the role of the generic Span type in memory handling. The author outlines techniques for building APIs around Span. Examples demonstrate how to reduce allocations and improve speed. The piece discusses trade‑offs when adopting Span‑First patterns. It highlights compatibility considerations with older .NET versions. The author provides guidance on testing code that uses spans. The conclusion encourages developers to evaluate Span‑First approaches for efficiency.