This books is open access under a CC BY 4.0 license. This book summarizes work being undertaken
within the collaborative MODAClouds research project which aims to facilitate interoperability
between heterogeneous Cloud platforms and remove the constraints of deployment portability
and reversibility for end users of Cloud services. Experts involved in the project provide a
clear overview of the MODAClouds approach and explain how it operates in a variety of
applications.While the wide spectrum of available Clouds constitutes a vibrant technical
environment many early-stage issues pose specific challenges from a software engineering
perspective. MODAClouds will provide methods a decision support system and an open source IDE
and run-time environment for the high-level design early prototyping semiautomatic code
generation and automatic deployment of applications on multiple Clouds. It will free
developers from the need to commit to a fixed Cloud technology stack during software design and
offer benefits in terms of cost savings portability of applications and data between Clouds
reversibility (moving applications and data from Cloud to non-Cloud environments) risk
management quality assurance and flexibility in the development process.
