Web Deployment Tools Simplify the migration, management, and deployment of IIS Web servers, Web applications, and Web sites. Administrators can use command-line scripts and WEB Deployment Tools to synchronize IIS 6.0 and IIS 7.0 servers, or to migrate IIS 6.0 servers to IIS 7.0. Using the WEB deployment tool, administrators and delegated users can also deploy ASP.net and PHP applications to IIS 7.0 servers through IIS Manager. easily migrate Web applications between IIS 6.0 and IIS 7.0
Simplifies the planning of IIS 6.0 to IIS 7.0 migrations by identifying incompatibilities and previewing recommended changes before starting the migration. Knowing any potential problems in advance will give you the opportunity to take corrective action and simplify the migration process. Effective Sync server farm
Using the WEB deployment tool, you can detect differences between source content and target content and transfer only those changes that need to be synchronized, thereby effectively synchronizing sites, applications, or servers in an IIS 7.0 server farm. This tool simplifies the synchronization process by automatically determining which configurations, content, databases, and certificates are to be synchronized for a particular site. In addition to the default behavior, you can optionally specify additional providers to synchronize, including COM, GAC, and registry settings. make it easier to package, archive, and deploy WEB applications
Using the Web Deployment tool, you can package the configuration and content of installed WEB applications, including SQL databases, and use these packages for storage or redeployment. Using IIS Manager, you can deploy these packages without administrative privileges. This tool is also set up with Visual Studio 2010 to help developers simplify the deployment of Web applications on a Web server.
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The specific QuickStart can read this article: Introduction Handy tool: Web Deployment Tool 1.0 (with notes)
Command-Line UI tool: WebDeploy auto-completion UI
A direct synchronization of multiple servers can be referenced: Web server change Notification or Web server Compare or MS Deploy UI for Multi server sync