Spark was created and open-sourced in 2011 by Per Wendel and was completely rewritten for version 2 in 2014. Spark is a free and open-source software web application framework and domain-specific language written in Java. It is a full-featured instant messaging (IM) and group chat client that uses the XMPP protocol. At Data Bytes, we also provide Placement assistance after successfully completing our Spark training in Bangalore. Visit Data Bytes and know more about the Spark Training in Bangalore.