2025 Will Be the Year of Rust—Why Big Tech Is Ditching C++

### 2.2 Growing Maintenance Cost: Maintaining big C++ codebases is famously challenging. Technical debt increases in magnitude as projects grow, particularly in codebases spanning decades and through several iterations and ownership changes. Maintaining C++ at scale runs a risk and a resource drain without consistent formatting, modern language features, and safe concurrency primitives. Particularly for new teams inheriting legacy systems, Rust’s expressive syntax, rigorous compile-time checks, and community standards help to lower long-term maintenance costs and increase team productivity. ### 2.3 Challenges New Developer Onboarding: Modern developers—especially those from languages like Python, JavaScript, or Go—often find C++ antiquated, difficult, and hostile to newbies. The syntax is difficult, the error messages are vague, and even writing basic, safe programs can call for thorough understanding of memory management. Rust, while stringent, offers a substantially more supportive developer environment. It actively guides new programmers toward writing safe, idiomatic code. … ### Where Rust Falls Short: - **GUI Development:** While efforts like egui, iced, and druid exist, Rust lacks a mature, cross-platform GUI framework equivalent to Qt or Electron. - **Mobile Apps:** Rust doesn’t yet offer first-class support for iOS/Android app development out of the box. - **Rapid Prototyping:** The compiler’s strictness might slow down fast iteration, especially for scripting-style workflows.