three years on-site operation and maintenance of sldc chhattisgarh website including third party services used or required for the smooth function of sldc cg website, gmail professional for works services for the corporate, web ui based sms service, antivirus service,web ui based intranet services etc. along with deployment of 01 no. skilled it staff during office hours on csptcl working days, i.e. 6 days a week as described or referred to in the scope of work.