C++20 concepts for callable types and executor interfaces.
Core C++20 concepts for Result/Optional types.
C++20 concepts for monitoring and metric collection interfaces.
C++20 concepts for transport client interfaces.
C++20 concepts for container and collection types.
C++20 concepts for event bus types.
C++20 concepts for logger interfaces.
C++20 concepts for compile-time type validation.
C++20 concepts for dependency injection and service container.