About

• The Cabinet committees are set up to resolve issues and formulate proposals for the consideration of the Cabinet and take decisions on matters assigned to them. The Cabinet is empowered to review such decisions.
• The Prime Minister sets up Cabinet committees with selected members of the Cabinet and assigns specific functions to these committees. 
• The Prime Minister may change the numbers of committees, and modify the functions assigned to them.

Membership

• The membership of each committee varies from three to eight. 
• Usually, only Cabinet ministers are members of these committees. However, there are instances where non-Cabinet ministers can be members or special invitees to committees. 
• If the Prime Minister himself is a member of any such committee, he acts as the head of that committee.

Cabinet Committees at present

• There are eight Cabinet committees at present 
  • Appointments Committee of the Cabinet, 
  • Cabinet Committee on Economic Affairs, 
  • Cabinet Committee on Political Affairs, 
  • Cabinet Committee on Investment and Growth,
  • Cabinet Committee on Security, 
  • Cabinet Committee on Parliamentary Affairs, 
  • Cabinet Committee on Employment & Skill Development, and 
  • Cabinet Committee on Accommodation.

• All committees except the Cabinet Committee on Accommodation and Cabinet Committee on Parliamentary Affairs are headed by the PM.

Significance of Cabinet Committee on Security (CCS)

• The CCS has the ministers for Finance, Defence, Home Affairs and External Affairs as its members. 
• It is responsible for debates, discussions and appointments of/ in the national security bodies. 
• Major decisions with respect to the significant appointments, issues of national security, defence expenditure of India are taken by CCS.
• Besides dealing with defence related issues, the CCS also brainstorms on issues relating to law and order and internal security, and policy matters concerning foreign affairs on security-related issues. 
• It also considers matters relating to atomic energy.

Source

• https://indianexpress.com/article/explained/everyday-explainers/narendra-modi-cabinet-committees-ccs-explained-9381592/