Fit For Purpose - the x86 server offers the most comprehensive 'fit for purpose' architecture in the market today. Having grown up from handling simple file/print work; to the primary platform for email; to a leading WEB architecture platform; to running critical business applications covering ERP, CRM, SCM, BI, etc.; and handling specialized workloads covering areas like modeling weather or advanced financial analytics.....
The x86 server architecture will be found from the smallest companies - handling their file/print, email, WEB access - to the largest companies in the world - running line of business applications, supporting their customer facing WEB sites, used for advanced modeling of new products.
This variety of workloads you will find x86 servers running is really only limited to the imagination and needs of the customers leveraging this technology.
The broad spectrum of workloads and environments that customers want to use the x86 server architecture in has created the need for a variety of server designs. Simple Tower designs for stand-alone environments, Rack Optimized designs for wiring closets/racked environments, Blade designs for integrated environments, Enterprise or Scale-Up designs for monolithic applications, high performance clusters (HPC) for doing numerically intensive work like weather forecasting and derivative evaluations, and clusters supporting massive scale-out environments typically found in large WEB based environments.
Large portfolios of different server types offers choice but sometimes creates confusion. But the confusion can easily be cleared up by chosing the type of server that best addresses the customers' current needs, best leverages the customers' environment, and delivers the best ROI (this allows future needs within the life span of the server to be considered).
The variety of designs of x86 servers is really a definition of 'fit for purpose'.