System and method for automatically generating and executing service operation, implementation for executing a task is disclosed. Task information and Entity relationship model associated with task is processed to identify part of the Entity Relationship Model matching with the task. Service operation template associated with the task is identified based on task information; and part of the Entity relationship model and service operation template is processed dynamically to generate and execute service operation implementation for executing the task. In another aspect, a part of an Entity relationship instance model associated with the task is identified dynamically based on the part of the Entity Relationship Model matching with the task and the task information; and part of the Entity relationship Instance model and service operation template processed dynamically, to generate and execute the service operation implementation for executing the task.