Okapi meet symfony, symfony meet Okapi

The Okapi framework was initially developed by the Liip AG together
for use at local.ch as thin layer mainly handling XSLT transformation
and request mapping between the Java backend and the PHP based
frontend. It has evolved since then but has stayed true its heritage
of being the thinnest possible layer that combines various open source
libraries. In this spirit the sfYaml component was integrated in
version 1.1 of the framework. Okapi 2 has integrated various
additional symfony components to further reduce the amount of code
that has to be maintained in house, while at the same time giving
Okapi a very modern architecture having adopted the event dispatcher,
request handler, service container components. This sessions explains
why we choose to integrate these components and how we went about
implementing them and more importantly what lessons we learned along
the way.