Towards Incremental Updates in Large-Scale Model Indexes -- Energy Consumption Analysis and Design of Energy-aware WSN Agents in fUML -- Reusable Model Interfaces with Instantiation Cardinalities -- A Generative Approach to Define Rich Domain-Specific Trace Metamodels -- On Lightweight Metamodel Extension to Support Modeling Tools Agility -- A Model Management Imperative: Being Graphical is not Sufficient, You Have to be Categorical -- A Model-based Approach for the Integration of Configuration Fragments -- AspectOCL: An extension to OCL for specifying crosscutting constraints -- Property Access Traces for Source Incremental Model-to-Text Transformation -- A comparison of two-level and multi-level modelling for cloud-based Applications -- Empirical Evaluation of UML Modeling Tools- A Controlled Experiment -- Opening the Black-Box of Model Transformation -- Type Inference in Flexible Model-Driven Engineering.

This book constitutes the proceedings of the 11th European Conference on Modelling Foundations and Applications, ECMFA 2015, held as part of STAF 2015, in L`Aquila, Utaly, in July 2015. The 13 papers presented in this volume were carefully reviewed and selected from 54 submissions. The committee decided to accept 13 papers, 9 papers for the Foundations Track and 4 papers for the Applications Track. Papers on a wide range of MBE aspects were accepted, including topics such as aspect-oriented modeling, model management, model transformation, advanced meta-modeling, UML modeling tools, and domain-specific modeling w.r.t. energy consumption and cloud-based systems.