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Scap 2 Architecture
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Most Wikimedia services have migrated to the newer scap 3.0 deployment
architecture, however, a few services and most notably, MediaWiki itsself,
still utilize the "legacy" scap 2 architecture, which is outlined below:

.. toctree::
   :maxdepth: 1

   commands

.. raw:: html

  <a href="https://commons.wikimedia.org/wiki/File:Scap-diagram.png"><img
   src="https://upload.wikimedia.org/wikipedia/commons/4/4d/Scap-diagram.png"
   alt="A diagram of scap's MediaWiki deployment architecture"/>
  </a>