I think the literal translation works 100 % fine, though 'consistency' has a slightly more positive slant to it.

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Note added at 6 mins (2011-11-30 13:09:57 GMT)
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on the basis of repetition in the execution of processes



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Note added at 8 mins (2011-11-30 13:11:36 GMT)
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You could also replace "the execution of" for "the implementation of" or "carrying out" (without 'the' and 'of')

other option. some additional info you may find here: http://en.wikipedia.org/wiki/ISO_9000

I think this might be what they're referring to.
I'm aware the original reads "repetition",
but they probably meant "repeatibility" which, in this case,
means that you carry out a process in the same way at all times
(to the extent possible).

Spanish term (edited): la repetición en la ejecución de procesos

This would be my approach here. The source text is not exactly, shall we say, sophisticated, whereas English IT speak usually tries to be downright sophisticated.

There’s lots of room to cut the word count down in the English too, which I would be inclined to do to achieve this “sophistication”. For example “la simplificación y mejora de la operativa” — “to simplify and enhance operations” could be shortened to “to streamline operations”. Another example is "como mecanismo", which I feel is redundant as it adds nothing.

By the way, not exactly sure what is meant with “cambiar la cultura”... presumably it means something like correct any bad habits identified?

“Para incrementar la satisfacción y fidelidad de nuestros clientes es clave avanzar en la colaboración entre áreas de la empresa y la simplificación y mejora de la operativa, sobre la base de la repetición en la ejecución de procesos como mecanismo para establecer hábitos y cambiar la cultura.”

“To increase customer satisfaction and loyalty, it is crucial to foster greater collaboration within the company and to streamline operations using seamlessly integrated processes to identify habits and change the culture.”

Good luck :)

I see "execution" as totally redundant in English