Glossary / Deployment Ring
Deployment Ring
A defined group of endpoints that receives a change before the next group does, so a bad update is discovered on a handful of machines instead of the whole fleet.
Rings are a staged-rollout pattern: a small first ring (often internal or volunteer machines), then a broader pilot, then general deployment, with a soak period between each. The point is not caution for its own sake — it is that the population exposed to a defect is bounded and known in advance.
A ring only works if it is a persisted, named group rather than an ad-hoc selection rebuilt at each rollout. If ring membership is re-derived by hand every time, the "canary" group changes shape between rollouts, and evidence that ring one was clean last month says nothing about ring one this month.
The other half of the pattern is a halt condition defined before the rollout starts: a failure rate, a specific error, or a support-volume threshold that stops promotion automatically. Rings without a halt condition just distribute the same failure over a longer period.
How Nexus handles this
Nexus patch deployment targets persisted deployment rings with maintenance windows and auto-halt, and an update path that has not passed its ring does not silently promote itself.
More terms
MSP (Managed Service Provider)
A company that remotely manages a client's IT infrastructure and end-user systems on an ongoing, proactive basis — usually a flat-fee contract, not break-fix billing.
RMM (Remote Monitoring and Management)
Software that lets an MSP monitor device health and perform remote management tasks — patching, scripting, remote control — across every client site from one console.
PSA (Professional Services Automation)
Software that runs the business side of MSP operations — ticketing, SLAs, billing, contracts, and client records — the system of record most MSP work flows through.
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