What are the differences between using a domain or a workgroup in Windows XP

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What are the differences between using a domain or a workgroup in Windows XP

Windows XP Professional operates and looks different depending on whether you're a member of a domain or a workgroup. This table provides an overview of the main differences.
Windows XP functions    On a domain    In a workgroup
NETWORKING       
Part of a local area network (LAN)    YES    
Part of a peerâ€"toâ€"peer network (for small businesses)       YES
Part of a home network       YES
Computer account required    YES    
GENERAL OPTIONS       
“Welcome” screen available       YES
Fast User Switching available       YES
Password Backup and Restore Wizard available       YES
New and classic Windows desktops available    YES    YES
Guest account automatically included       YES
Internet and eâ€"mail access    YES    YES