# Giving a meaning to big data
What is it about ?
Big data can be many things, so we'll give our own definition. In this innovation axis, big data
is about textual content which is hard to index (for instance, entity extraction). It is also about
the size of the index for a very large amount of documents (several hundreds of millions).
We want to propose an open source platform as easy to access as possible, which covers the whole value chain, from big data retrieval up to their exploitation thanks to an ergonomic interface. This innovation has a name: it's Datafari.
Hadoop, ManifoldCF, Datafari, Solr