|By Jeremy Allaire||
|May 30, 2002 12:00 AM EDT||
The MX family of software was introduced by Macromedia last month. Without a doubt, it is the broadest and most impactful set of software releases in the company's 10-year history.
Macromedia MX combines clients, servers, and tools into an integrated family that will deliver rich Internet applications. It deeply embraces the idea of deploying and using "software as services," though the MX approach goes beyond many of the current notions and discussions in the industry about Web services.
What's the Big Idea?
Over the past couple of years, an idea has emerged (some might argue it's an old idea) that software will be transformed into being used as services, rather than as monolithic applications tied to a specific machine or platform. Rather than install software onto computers every time we need some functionality, an end user or corporation can reuse other application assets over the network. The idea expands into the notion of just-in-time delivery of applications. "Software as services" is a big idea. It holds the promise of introducing radical new economies of scale into the manufacture and distribution of software applications. From an end-user perspective, it's the idea that users can access information and applications anytime, anywhere, and from any device.
This is a powerful set of ideas. It's the idea that the value we create in software can be freed from any single delivery platform. It's the idea that rich applications can be used easily across platforms and devices. How close are we today to realizing this set of ideals?
The Web Services Industry Today
The phenomenal focus on Web services over the past year is interesting when contrasted with the actual set of technologies available to fulfill this vision. When comparing the broader vision for software as services to the current world of Web services technologies - protocols like SOAP and formats like WSDL - it looks more like we're perhaps 25% of the way toward fulfilling that vision.
Today Web services are primarily talked about through the lens of specific protocols - SOAP and WSDL, perhaps UDDI, though I've yet to find a customer who's really using UDDI in any significant way. This early focus and discussion is great; finding the holy grail of a common protocol for exchanging objects and data between platforms is an incredible achievement, and the fact that the industry is so focused on it gives us hope for the future of interoperable and open software.
But even the current crop of technologies implemented around these standards has problems and challenges. In the Web services model, application logic is well structured, often as component services. In actuality, the need to deliver well-structured applications has largely eluded Web application development over the past years. In fact, we all know that close to 75% of Web applications aren't well structured; they're conglomerations of dynamic pages, including scripting languages, database code, and presentation logic all together. Indeed, the desire to move to component middleware standards such as EJB, CORBA, and COM has been manifest mostly in the world of high-end architectures within large corporations rather than in the mainstream of Web application development.
As such, there is a huge disconnect between the need for well-structured Web services and the reality that most Web applications are built using 4GL scripting languages, usually are unstructured, and rarely meet the requirements of thoughtfully designed object-oriented systems.
Let's assume for a moment that Web services are strictly defined as the middleware standards for messaging and object marshaling - for example, SOAP and WSDL. Even in that world, the vast majority of Web application developers aren't well positioned to both create and consume Web services without becoming full-on system programmers using complete object-oriented environments such as Java or .NET. The back-end world of Web services needs to evolve to make it simpler for RAD or scripting-level developers to easily create and consume Web services. It would be a huge victory for the industry if those 75% of Web applications built with scripting languages could also share their value and data with other applications.
However, the focus on Web services through this lens largely relegates the topic to discussions of classic back-end middleware rather than a more holistic view of what's necessary to deliver software as a service. Strikingly absent from the current discussion of Web services is any notion at all of what the end-user experience is of these "software services." This is due in part to the type of vendors thinking about Web services - for example, traditional enterprise middleware companies - but it's also because of the hard work required by interoperable messaging and object protocols. These are necessary conditions to any future for software as services.
Getting back to the original vision of software as services, it's quickly apparent that we need a much more holistic discussion and framework for thinking about Web services, one that actually includes end users using this software. What would an end-to-end model for Web services look like?
The Missing Piece: Rich Clients and Web Services
Many of the early visions and discussions of Web services centered on the idea that, in the future, software could be used as a service rather than as monolithic applications that needed to be installed and used on our desktop computers. While the Web has made progress in delivering applications easily to browsers, the world of Web services would take it further by delivering the experience of desktop-quality software that can be consumed as a service. Visions of using "productivity applications" as services were common interpretations by the industry. Examples such as Hotmail and Salesforce.com were cited as leading indicators. In this future world of software services, end users could easily access rich applications from any desktop computer; these applications would always have their personal information, would be interconnected with back-end systems, and could even be portable across devices. This new world, however, would leave behind the document-based or page-based model of the Web for one that was much richer in terms of application capability, and that extended beyond the browser onto desktops and devices.
What is the user experience of Web services? What's the model for combining rich interfaces with back-end middleware to deliver exceptional new value for end users and the companies that serve them?
Macromedia believes that the perfect complement to Web services as middleware is the emerging category of rich clients. Indeed, it may well be that rich clients and Web services are two sides of the same coin, combining to enable this world of software as services.
What are these rich clients, and what do they require to really meet the requirements of transforming the user experience and providing the logical front-end to back-end Web services?
Rich clients should combine rich content, applications, and communications in a single client environment. By rich content I mean richly formatted text, graphics, audio, and video. By applications I mean both rich, complex-user interfaces - the kind we expect from a modern desktop computer - and application logic and data deployed in the network. And by communications I mean the ability for end users to interact through these clients, to share data, text, audio, and video in real time and nonreal time. Rich clients should provide these capabilities in an integrated manner, where the applications that can target them far exceed what is possible in the world of HTML documents.
Rich clients should allow applications to run in browsers, but also as standalone applications on desktops and laptops. They should also support running on devices. To support these new Internet-connected application types, they should support offline data storage, enabling occasionally connected devices and applications.
Most important, rich clients should anticipate the emerging world of back-end Web services by using a services-oriented architecture for integrating business logic and data across the network, whether that's simply contained in an application server or actually a distributed Web service exposed through a protocol like SOAP.
Rich clients and Web services combined hold the promise of fulfilling the broader vision that the industry has for deploying software as services. The combination will enable rich, business-connected productivity applications. It will transform what's possible on the Internet today. From now on, when people ask you what Web services are and why they're significant, make sure your worldview encompasses this broader perspective on software as services.
Macromedia MX and Web Services
As might be expected, Macromedia has focused on delivering a holistic approach to Web services, one that provides transformative technology for the client, server, and development-tools aspects of Web services.
ColdFusion MX: An Approachable Web Services Environment
Starting with the more common world of Web services as component middleware, Macromedia has introduced major new Web services capabilities in ColdFusion MX, the latest release of this rapid server scripting environment. For those not familiar with CFMX, it's a fundamental shift and repositioning for ColdFusion in the industry, moving from being a proprietary application server to a rapid development and scripting environment that runs on any popular application server, such as IBM WebSphere or Sun's Sun ONE.
Specifically with Web services, Macromedia focused on delivering a Web services engine that would empower RAD and scripting-level developers to easily construct and consume Web services. Using a technology called ColdFusion Components, or CFCs, scripting developers can add simple tags that provide metadata for defining a service and then include arbitrary script inside that metadata. The result is a well-defined component that provides a services-based interface (see Figure 1). Underneath, CFCs are dynamically compiled into JavaBeans and hot-deployed into the containing application server. This gives the mass of scripters the ability to easily construct server-side logic that can immediately be exposed through SOAP and can also be used by rich clients, such as Macromedia Flash Player.
The ColdFusion MX Web services engine is actually based on Macromedia's active involvement in the Apache Axis project, with strong contributions from IBM and others in the Apache community. It is the first commercial server to use this powerful new open-source Web services platform.
While CFCs allow developers to create Web services easily, ColdFusion MX also includes approachable capabilities for consuming and using Web services. Developers can declaratively invoke any Web service and Web service method at runtime; ColdFusion will dynamically generate Java client proxies that handle all the SOAP interactions, and actually transform SOAP results into local variables that can be used from script. Developers don't need to think about parsing SOAP or WSDL, or even of manually building client proxy skeletons, let alone having to invoke interfaces on those proxies.
Web services can also be imported into a script and used as tag libraries, with each method on a Web service exposed as a custom tag, enabling even HTML-level designers and programmers to use Web services.
Flash Player 6.0: The Internet's Premier Rich Client
In line with our more holistic view of software as services, Macromedia is leading the way with the introduction of a powerful rich client for delivering Internet applications. Macromedia Flash Player has evolved into being a complete environment for delivering rich user experiences across browsers, operating systems, and devices.
Over the last several years, Macromedia Flash Player has emerged as the most ubiquitous client runtime on the Internet. With more than 98.3% of Internet end users having a version of the player, it is now the most widely deployed software environment in the history of computing. Since the introduction of Flash Player 6.0, we've distributed well over 100 million new runtimes, averaging almost 3 million downloads per day. Packed into this new player are powerful new capabilities for delivering applications. Flash Player now provides a more complete programming environment, a visual component model, and fantastic new rich-content types (see Figure 2).
Most important, we've introduced technology for connecting rich client applications with back-end services. Dubbed Macromedia Flash Remoting, this technology provides a high-performance connection between rich clients and back-end services, no matter what the back-end platform or model. Flash Remoting supports using services deployed as CFCs and scripts, Java classes, JavaBeans, EJBs, JMX Beans, C# objects, ADO.NET, and ASP.NET pages. With these services it provides a high-performance binary connection - running over HTTP - between server objects and client objects.
Additionally, Macromedia Flash Remoting provides a simple mechanism for connecting Flash to SOAP Web services, even services deployed on networks and servers that are different from the application's origin domain. Crucially, browser-contained Flash applications follow a strict security sandbox, where they can make requests only to their originating domain. Flash Remoting provides a server-based proxy to any SOAP Web services.
Nonetheless, the Macromedia Flash Remoting model uses a services-based architecture that is back-end independent: client code can use services without ever knowing the type of back-end implementation.
Dreamweaver MX: Creating and Using Web Services
Two tools in Dreamweaver MX stand out with respect to creating and using Web services. Dreamweaver MX includes development tools for creating CFCs for easy authoring, providing one of the quickest ways to create SOAP-accessible Web services. It also includes significant tools for using other people's Web services. The Dreamweaver MX Web services browser allows you to point to any WSDL file or UDDI repository and import a Web service into the development environment. This provides a visual browser of the Web service's interface, and will even generate client proxies for .NET and Java. Once developers find a method they want to use, they can drag-and-drop these into their code and Dreamweaver will create the basic invocation code automatically.
Studio MX: Tools for Creating Web Services
With the MX product family Macromedia has both broadened and focused its suite of design and development tools by providing an integrated suite called Macromedia Studio MX. Studio MX provides everything needed to rapidly create everything from content and graphics to rich and complex user interfaces, server-side logic, and components that interact with XML, databases, and Web services (see Figure 3).
In the MX family Macromedia Flash MX provides the primary authoring environment for creating rich client user interfaces, evolving from its early heritage as a motion graphics design environment to a complete application development tool for client-side applications. Likewise, Dreamweaver MX has also been transformed from being the premier Web authoring and site development package to a complete IDE for Web application development, including powerful new programming and database tools and support for XML and Web services.
Software as Services: Make It Real
Macromedia is passionate about the idea of using software as services. We believe in a holistic view that encompasses both the front-end user experience and the back-end integration layer. Our hope is that by making Web services approachable and affordable, all of us - not just the legions of advanced programmers and classic middleware developers - will be able to take advantage of what they have to offer. Building for the next generation of the Internet should be fun - let's make the Internet interesting again!
|David Santora 06/16/02 11:46:00 AM EDT|
yea, but you have to pay a monthly fee for all these services. and you could aford to pay for more services, when you are all ready paying for cablle tv, cable or DSL access,cell phones a regular phone service and the list gos on. and now you will ba paying for a whole list of internet services monthly. ( I don' think so )
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