add latency sentence

Author: vladvelici

src/pages/docs/guides/chat/build-embedded-chat.mdx

@@ -25,7 +25,7 @@ Ably is trusted by organizations delivering chat to millions of users in realtim
 
 ![Ably Architecture Overview Diagram](../../../../images/content/diagrams/architecture-overview.png)
 
-Delivering chat messages in realtime is key to a smooth online experience. Ably's [serverless architecture](/docs/platform/architecture) eliminates the need for you to manage websocket servers. It automatically scales to handle millions of concurrent connections without provisioning or maintenance. Ably also handles all of the edge-cases around delivery, failover and scaling.
+Delivering chat messages in realtime is key to a smooth online experience. Ably's [serverless architecture](/docs/platform/architecture) eliminates the need for you to manage websocket servers. It automatically scales to handle millions of concurrent connections without provisioning or maintenance. Ably routinely handles 600 billion messages every month globally, across 2 billion devices with median delivery [latencies](/docs/platform/architecture/latency#message-delivery-latency) under 6.5ms even during peak traffic. Ably also handles all of the edge-cases around delivery, failover and scaling.
 
 Despite the challenges of delivering these guarantees, Ably is designed to keep costs predictable. You can choose between MAU-based (more predictable for a known number of users) or per-minute pricing (consumption-based, pay for what you use), depending on your needs. Both pricing models are designed to be cost-effective and scalable. Features such as efficient connection management are available to help you reduce costs.