Advantages: Cookies are simple to use and implement. Occupies less memory, do not require any server resources and are stored on the user's computer so no extra burden on the server. We can configure cookies to expire when the browser session ends (session cookies) or they can exist for a specified length of time on the client’s computer (persistent cookies). Cookies persist a much longer period of time than Session state. Disadvantages: Cookies are maintained at the client system, so they are not secure A limited number of cookies are allowed for the website (Max 50) A limited amount of data can be maintained (Max 4kb) Only plain text can be maintained