Vencislav Georgiev modernized the build system for the open-telemetry/opentelemetry-cpp repository by enabling support for the CXX26 C++ standard. He updated the CMake-based configuration to recognize and correctly handle CXX26, ensuring compatibility with newer toolchains and simplifying the setup process for developers. His work included refining STL selection logic and enhancing error messaging to help users quickly diagnose configuration issues. Using C++ and CMake, Vencislav focused on forward-compatibility and developer experience, delivering a targeted feature that positions the project for future C++ standards. The work was deep and precise, addressing a core infrastructure need without introducing bugs.