The domain of the Internet has extended from computers to different types of heterogeneous and homogeneous sensors leading to connectivity of almost everything and making it smart. This has resulted in the development of Internet of Things (IoT). This paper attempts to give a brief description of the IoT system, its general architecture, the different layers of IoT architecture and the technologies used for the development of an IoT System. The main objective of the paper is to give recent advances in applications of various types in different domains.

Abstract:As we are aware of the social media is usually preferred to share their view towards an object, event. Social networking sites are very beneficial for organization for their business purpose. As people share their opinion about their product and service. Also customer want to know about existing user before they purchase that product. Form that data we can get the data on that data we can do processing and such processed data is used for sentiment analysis. It is very useful for business analysis, production, quality, sales. Processing such twitter or social media data is very challenging task but gaining knowledge from data represents business and benefits regarding product. In this paper we have tried to analyze opinion mining, Advantages, scope of data mining and tools required for it.

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