In 2017, organizations face intensifying pressure to accelerate digital delivery while maintaining reliability,security, and customer satisfaction. Traditional process frameworks provide valuable structure but often fail tocapture the dynamic, cross-functional realities of Lean-Agile and DevOps transformations. To address this gap,this paper proposes a structured Lean-Agile and DevOps Maturity Model that guides enterprises on theirjourney toward continuous improvement. The model synthesizes industry frameworks such as SAFe and Scrumwith DevOps practices including automated testing, continuous integration, and telemetry. It defines clear levelsof maturity across dimensions such as deployment automation, release management, observability, securityintegration, and organizational culture. By providing a staged roadmap, the model enables teams to benchmarktheir current capabilities, identify bottlenecks, and prioritize investments. Through case studies in financialservices, telecommunications, and e-commerce, we demonstrate how organizations applying this model reducedrelease lead times by more than 70%, improved deployment success rates by 40%, and institutionalized continuousimprovement practices at scale. We conclude that structured maturity models remain essential in 2017 for aligningleadership, technology, and culture, offering both a diagnostic lens and a continuous improvement engine formodern enterprises.