This year looks to be brighter for information technology. Budgets are thawing. And numerous new products — many of them relatively inexpensive — beckon with promises to improve the performance, reliability, security, manageability, or profitability of your infrastructure. Which ones will really deliver? Herewith is our annual roundup of 2003’s key IT trends and the Test Center analysts’ picks for the most innovative and effective products for 2004. Technology Industry