Hi Sir,
I would like to know about the tools to design all the layers mentioned in the course . Basically how do design team communicate with development team ?? Any open source tool to achieve the same .
Hi @macmukesh
You can use any tool to design such diagrams. Some of the open source tools are available like Lucidchart, Microsoft Visio, and Creately.
Hope it will help, Happy Learning 
Thanks Shahrukh .
I would like to know do we have any courses to learn this tool. I could not find any such course regarding design modelling tool .
Hi @macmukesh
You don’t need to have a complete course on design modeling tools, the open source tools which I have mentioned earlier are so easy to use or you can take a beginner guide or introductory videos on how to use them.
Hope it will help, Happy Learning