With the standard architecture model, management workloads run on a dedicated management domain and user workloads are deployed in separate virtual infrastructure (VI) workload domains. Each workload domain is managed by a separate vCenter Server instance which provides for scalability and allows for autonomous licensing and lifecycle management.
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Standard architecture is the recommended model as it aligns with the VMware best practice of separating management workloads from customer workloads. It provides better long term flexibility and expansion options.