DODAS provides a multi-user, on-demand solution for both interactive (Jupyter based) and distributed data analytics, supporting community-tailored customization. DODAS bridges compute resources and remote data storage, optimizing the data access throughput. It automates the whole process for dynamically instantiating a ‘Data Analysis Facility’ with capabilities which span from HTCondor batch systems up to Big Data Platforms for heterogeneous data processing. Being it highly customizable it is suitable to create mission-specific, community-tailored computing platforms which have been used, as an example, to create an ephemeral WLCG-site as a Service