tailieunhanh - Cloud Computing Implementation Management and Security phần 9

Một lợi ích cần được rõ ràng đối với các ứng dụng dựa trên web là một thực hiện RESTful cho phép người dùng đánh dấu cụ thể "truy vấn" (yêu cầu) và cho phép những người được chuyển cho người khác qua email, tin nhắn tức thời, hoặc được tiêm vào wiki, vv Do đó, "đại diện" của một con đường hoặc điểm vào một trạng thái ứng dụng trở nên rất di động. | Chapter 9 Mobile Internet Devices and the Cloud Chapter Overview A December 2008 Informa Telecoms Media study1 estimated that there are over 4 billion connections to mobile devices worldwide an astounding number when you realize that this figure represents 60 of the global population today. Of course this does not mean that two out of every three people on Earth have a mobile phone. It is common in more than 60 countries however for one person to have two or more devices even while there are no phones at all in some parts of the globe. In some countries millions of people are now experiencing connectivity to the world for the first time through wireless technologies. It is changing their economic social and political fortunes forevermore. The number of wireless users on 3G services continues to rise daily. Informa estimates that there are nearly 415 million 3G subscriptions to date with 77 share of the 3G market on UMTS HSPA1 networks or 320 million connections and the remaining 95 million subscribed to the older CDMA EV-DO2 technology. The number of commercial UMTS HSPA networks has risen to 258 in more than 100 countries including 41 networks in 20 countries in the Latin America and Caribbean region. It is a foregone conclusion that HSPA and HSPA 3 will compete with all prevailing mobile wireless technologies available today. Telstra s recent commercial launch of HSPA reports peak theoretical downlink speeds of Mbps. The 3G technology is more than capable of delivering the high-speed bandwidth that customers If the cloud is becoming increasingly pervasive and mobile browsers are getting better every day you may be asking yourself if you need anything 1. 2. http doc_id 169641. http doc_id 169641. 235 236 Cloud Computing more on your mobile device beyond a browser that can access the cloud. Can browser widgets provide enough functionality that you don t need applications on your device .