This content describes the evolution of networking toward software‑defined infrastructure delivered through Network as a Service. Modern enterprise networks now include software‑defined LAN, SD‑WAN, and cloud‑managed components that integrate hardware, software, and services. NaaS enables organizations to shift spending from capital expenditure to operating expenditure, offering greater flexibility across budgets, currencies, and usage patterns. By adopting usage‑based models, enterprises can better align costs with demand while improving scalability and agility. Gartner projects strong growth in on‑premises NaaS adoption, driven by cost efficiency, flexibility, and the need to support digital transformation in an increasingly dynamic business environment.

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