Linkedin: Top three Enterprise Architecture challenges?

<discussion ref="http://www.linkedin.com/groupAnswers?viewQuestionAndAnswers=&gid=36781&discussionID=9394300" />

1) Move from vendor/group/institute-centric EA to customer-centric EA.

2) Advance from just being DNA or “enterprise genotype” (a full nomenclature of enterprise artefacts) to provide a formal link with “enterprise phenotype” (a set of observable characteristics such as performance).

3) Develop a commonly-agreed reference model.

Thanks,
AS