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Now we're ready to look at another important piece for connecting Spring services to the user interface—BlazeDS, a technology for remotely connecting to Java objects and for sending messages between clients. As Adobe points out, BlazeDS allows you to connect to back-end distributed data and push data in real time to Adobe Flex and Adobe AIR rich Internet applications (RIA). You can think of Blaze as a bridge between Adobe Flex (the presentation layer) and Java Spring Services (the business logic layer), as shown in Figure 1-3. Figure 1-4 outlines the BlazeDS server architecture.