The process of building machine learning algorithms requires extensive knowledge of mathematics and statistics. Some smart data scientists have put together open source libraries, such as MLlib (https://spark.apache.org/docs/latest/mllib-guide.html), and various tools and engines on the internet to make this process simpler. However, it is still resource intensive to put together all of this for a machine learning project. This is where PredictionIO makes it simpler by abstracting all these dependencies.
As per Apache, "PredictionIO is an open source Machine Learning Server built on top ofstate-of-the-art open source stack, that enables developers to manage anddeploy production-ready predictive services for various kinds of machinelearning tasks."
It provides full stack machine learning systems to develop and deploy machine learning capabilities.