I've always seen it stand for Python, Perl or PHP-- with many shops specifically...

		strlen on March 25, 2011 \| parent \| context \| favorite \| on: Did the Microsoft Stack Kill MySpace? I've always seen it stand for Python, Perl or PHP-- with many shops specifically stating "P for PHP" or "P for Perl". Yahoo hasn't settled on PHP vs. mod_perl (as a replacement for a C based template system filo built) until early 2000s and (when I was there) still had many Perl based services in production.

When I interned at SBC/Yahoo DSL around 'mid 2000s, they used the LAMPerl stack quite extensively.