Which model describes five levels of maturity in operational or software capabilities?

The model that describes five levels of maturity in operational or software capabilities is CMMI, which stands for Capability Maturity Model Integration. This model provides organizations with a structured framework for process improvement by assessing their current processes and outlining a path to higher levels of maturity.

CMMI helps organizations in various sectors improve their programs by defining maturity levels that range from initial (chaotic) processes to optimized (continuously improving) processes. Each level is characterized by specific goals and practices that should be achieved, facilitating better project management, risk management, and overall quality assurance in software development and operational processes.

In contrast, PCI DSS (Payment Card Industry Data Security Standard) focuses on data security standards for organizations that handle credit card information, GDPR (General Data Protection Regulation) pertains to data protection and privacy laws in the European Union, and STAR (Security, Trust, Assurance, and Risk) focuses on cloud computing and service provider assurance but does not delineate maturity levels in operational capabilities like CMMI does.