<FONT face=Verdana>The open

dynamic and ever-changing natures of Internet require the just-in-time scalability of middleware for Internetware.As the middleware for Internetware becomes much more powerful and complicated than ever

it is challenging to autoscale middleware dynamically and efficiently under the Internetware environment.In this paper

a profile-based approach is proposed to automate the dynamic scaling of Internetware middleware.Profiles formalize (a) states that are keys to consistent middleware being scaled;(b) reflected information required to trigger and fulfill dynamic scaling;and (c) the best-practice of scaling domain-specific middleware.The autoscaling tool based on this approach is capable of provisioning a scalable middleware and scale it dynamically according to the needs of Internetware.The provisioning and dynamic scaling of a scalable Mongrel cluster exemplifies the feasibility and efficiency of this approach.