In e-commerce each user want fast and optimized applications. In e-commerce each user also leave vast amount of data in your stores. Data which can’t be used is useless, it can be used only when applications and people can access to them. Probably you are wondering how you can access to it? With rescue comes Open Data Protocol, commonly called OData, this protocol is used in our Web API plugin. Goal of this article is to illustrate why OData is the best and why you should use it in your GrandNode.