let myStack = {
  Language : [C, C++, Java, Python, JavaScript],
  Framework : [Spring Boot, Django],
  Library : [STL],
  Layout : {
    markup : [HTML],
    styling : [CSS, Bootstrap]
  },
  Database : {
    relational : [MySQL]
  },
  DataScience : {
    analysis : [numpy, pandas],
    visualization : [matplotlib, seaborn, plotly, cufflinks]
  },
  MachineLearning : [scikit-learn],
  Tool : [Git, Postman]
  SAP : {
      Modules: [SAP MM, SAP Ariba, SAP Concur, SAP ABAP, SAP Fiori Forms],
      Tools: [Kofax-VIM, ServiceNow, HPALM/HPQC]
  }
};