--- title: "Universal DDI" canonical: "https://docs.infoblox.com/space/BloxOneInfrastructure/204800460/Universal%20DDI" format: markdown --- You can deploy Universal DDI across thousands of sites and reduce the total cost of ownership by leveraging low-cost hardware, virtual servers, license pooling, and license portability. You can access the DDI services by deploying the services on NIOS-X servers. For remote office deployments, you can deploy hosts on Infoblox appliances, bare-metal devices, and VM infrastructures. The communications between Universal DDI and the NIOS-X servers are encrypted and client visibility is maintained collectively through the Infoblox Portal. > ⚠️ **Note** > ⚠️ > ⚠️ When you enable NIOS appliances as NIOS-X servers, the QPS (query per second) throughput might vary, depending on your appliance models and the cache hit ratios. You might see a bigger performance impact when the cache hit ratio is lower. In general, NIOS can forward at least 3,500 QPS to the Infoblox Platform. For standalone installations, the QPS may vary depending on the hardware used and the cache hit. However, the number of QPS could fall in the range of 3,500 when you deploy an OVA with the recommended minimum system requirements. For more information, see *[Minimum System Requirements for NIOS-X Servers](https://infoblox-docs.atlassian.net/wiki/spaces/BloxOneInfrastructure/pages/873758806)*. > Macro (children)