# Introduction

**SureStream** is a high-availability live video solution that maintains operational visibility even during events that take all Milestone XProtect servers offline. Such incidents could be cybersecurity attacks, catastrophic data-center failures, or vanilla outages caused during software updates.

**SureStream provides a direct camera-to-client fallback path**, improving uptime in environments without redundant servers. It embeds an **ONVIF-compliant video client directly inside the XProtect Smart Client**, enabling operators to stream video straight from cameras—completely bypassing Management, Recording, and Failover Services.

SureStream supports both **Multicast and Unicast transport modes**, automatically adapting to camera and network capabilities. This ensures that security teams can continue monitoring their facilities from within the familiar XProtect Smart Client interface, even when the entire VMS backend is down.

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Quick Introduction
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Features at a glance
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