When different businesses want to integrate part of their processes and IT, they need to relate their enterprise architecture frameworks. An Enterprise Architecture Framework (EAF) is a conceptual framework for describing the architecture of a business and its Information Technology (IT), and their alignment. In this paper, the authors provide integration among some well-known EAFs (Zachman, Four-domain, TOGAF and RM-ODP) and produce an integrated EAF (IEAF) that can be used as common framework to communicate about EAFs of different businesses and relate them to each other.