BAC - Best Acronym Context !!!

I am using this acronym ( SAP ) so often that I need to finally know: "What do SAP letters mean ?"
I checked few of possible explanations but remeber, it's neither 'San Antonio Police' nor 'Save All Paper' (recycling slogan, but whows for suer what stands behind this company, some companies pretend to make doors and save energy but on the other hand they do logistic projects (sic!) ).

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Please write your suggestions in comments, decision will be made soon :)