ISO/IEC 15504 also known as SPICE (Software Process Improvement and Capability dEtermination) is a "framework for the assessment of processes" developed by the Joint Technical Subcommittee between ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission).

ISO/IEC 15504 initially was derived from process lifecycle standard ISO 12207 and the ideas of capability maturity in SW CMM.