From a modeling point of view, the terms aspect and model can be considered synonymous. This notion of aspect goes beyond the usual meaning found in the Aspect Oriented Programming community where an aspect is often narrowly dened as the modularization of a cross-cutting concern. From this perspective, work on aspect-oriented approaches to modeling is important because it can yield signicant insights into how the MDE vision of software development can be realized. There is thus a growing community interested in the convergence of Aspect-Oriented Software Development (AOSD) and MDE ideas. In this issue, we present papers that provide good examples of how AOSD and MDE ideas can be integrated to produce techniques that manage software complexity.