In recently, learners have always mobile devices including smart phones so that is collecting user's behavior by sensors mounted on the devices. This paper proposes a new notion for smart learning system by using the concept of elastic computing in cloud computing. The notion is Elastic 4S (Smart Pull, Smart Prospect, Smart Content and Smart Push) for the smart service. We focus on the benefits of smart computing for e-learning solution using handle intelligently to meet user's needs through collecting user's behaviors, prospecting, building, delivering, and rendering steps. The proposed smart-learning model will show the personalized and customized learning services to be possible in various fields.