Imagine trying to keep a skyscraper safe without a blueprint, building codes, or regular inspections. You might put locks on some doors but forget to reinforce the foundation. In cybersecurity, governance, risk, and compliance (GRC) give us that blueprint, those codes, and those inspections. This chapter introduces the most influential international standards and frameworks that help organisations manage security in a structured, repeatable way — so they can protect information, satisfy legal demands, and earn trust.