RISC-V (pronounced "risk-five") is a free, open-source instruction set architecture (ISA) developed at UC Berkeley. Unlike proprietary ISAs (ARM, x86), RISC-V enables anyone to design, implement, and sell processors without licensing fees. The architecture is modular—a minimal base ISA (RV32I or RV64I) with optional extensions (multiply/divide, floating-point, vectors, atomics). RISC-V is increasingly adopted in embedded systems, IoT, AI accelerators, and government/military applications valuing openness and independence. RISC-V is strategic for long-term tech independence and is backed by major organizations (Google, Western Digital, Alibaba). As a semiconductor/hardware engineer, RISC-V expertise opens roles in processor design, SoC development, and emerging RISC-V-native ecosystems. The architecture's simplicity and modularity make it ideal for custom processor design—valuable in AI, edge computing, and domain-specific hardware.