The Fibonacci sequence is a mathematical progression that starts with 0 and 1 and then continues to add numbers to this sequence that are equal to the sum of the previous two numbers. Thus, the first seven numbers in the sequence are: 0-1-1-2-3-5-8. People have started writing poems to this sequence since a blog posting on blogspot by a screenwriter/children's writer a couple of weeks ago. This is sort of a variation of the more restrictive haiku which usually consists of a pattern of 5, 7, and 5 morae, phonetic units (usually deemed to correspond to the syllables of a language). Poems often follow patterns, as a guiding element; loose standard or template.
In order to form and flourish, Service eco-systems also need to conform to patterns, to flourish with the implementation of their best-practices and with standards to provide them with general guidance, even if this is only to provide a means to extend or use only relevant parts of the standard in more realistic cirtcumstances. SOA Governance distributes policy for compliance with standards, inclduing acceptable extensions as well as templates ofr workproducts such as the Service Model, which includes the categorized Service Hierarchy among other elements.