Keep large-scale Infoblox environments under vendor-backed support for the long haul. This 5-year L3 maintenance upgrade is designed for deployments sized to 100,000 IPs, giving infrastructure teams a clear support path for environments where uptime, change control, and escalation quality matter. For enterprise networks, maintenance is not a checkbox. It is the difference between fast resolution and prolonged disruption when core services are under pressure. This upgrade helps preserve access to higher-tier technical support across a substantial installed base, making it easier to plan budgets, align renewal cycles, and maintain operational continuity without piecing together short-term coverage. It is a practical fit for organizations standardizing on Infoblox and looking to protect the value of that investment with a longer support horizon. The result is less uncertainty around service continuity, better alignment with internal procurement timelines, and a support posture that matches the scale of the environment.