Internet of things different from one device to the next but there are basic characteristics shared by most. IoT creates opportunities for more direct integration of the physical world into computer-based systems, resulting in efficiency improvements, economic benefits, and reduced human exertions. The number of IoT devices increased 31% year-over-year to 8.4 billion in the year 2017 and it is estimated that there will be 30 billion devices by 2020. The global market value of IoT is projected to reach $7.1 trillion by 2020. Ambient intelligence and autonomous control are not part of the original concept of the Internet of things. Ambient intelligence
Smart grids by country Department of Energy and Climate Change under the Cameron-Clegg coalition from 2010 - 2015 and now under Department for Business, Energy and Industrial Strategy and Office of Gas and Electricity Markets, the (rollout of) smart meters are estimated to cost £11 Billion, providing the British economy a net £6.7 Billion benefit. Smart Energy UK identifies the different roles of six stakeholders involved in the rollout of smart meters: Support for smart grids became federal policy with passage of the Energy Independence and Security Act of 2007. The law, Title13, sets out $100 million in funding per fiscal year from 2008–2012,