Challenges of Cloud Computing for Web Based Applications
As previously mentioned the advantages and disadvantages of cloud computing, this section discusses some factors that the users must consider when thinking about moving to cloud. Also Following are some of the barriers to cloud computing technology that the user could face and if these barriers are left unresolved, the cloud computing concept will ultimately destroyed. The barriers fall into several general points as follows:
- Technical issues: building a cloud computing is a big technical challenging that needs a significant resources, small companies or organizations cannot bear this burden. To establish a good cloud computing network there is a need to purchase hundreds or thousands of individual computers and servers, then setup them and configure all of them to work together. Users have to invest in software that will manage, control and monitor all of these servers, also feature Web based software have to be developed,
- Compatibility issues: all cloud applications is a Web based applications that use the Web technology in its implementation. If employees use a non word document application over the cloud and others use a word document, how to integrate both documents and allow the users to access any of them over the cloud or over the local private network,
- Concurrency: both services and applications provide resources that can be shared by clients in cloud computing system. There is therefore a possibility that several clients will attempt to access a shared resource at the same time,
- Internet issues: because cloud access is based on a good Internet connection, so the users without high speed Internet connections will have problems in working over cloud,
- Security issues: Securing cloud storage is a challenging task, for example, the saved documents in a Web based cloud system. What is the security guarantee that could be offered to the clients? How you guarantee that the document is there when you need it, and
- Business model issues: developing cloud Web based applications is a big investment project and companies should make money from offering cloud computing services. Some cloud providers, like Google, offers cloud services free of charge, which is a difficult way to generate revenue. Thus, if the service provider decided to charge for the cloud storage and services, how should these services is priced?
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Browsing Web Sites with Mobiles and Desktops
The selection of accessing the Web from mobile devices or from desktop computers usually depends on the user needs and location. The use of desktop computers provides larger screen size, broadband connection, the ability to run many applications simultaneously, and the use of tabs for browsing several sites. Desktop computers utilize a pointing device to click over the different fields and buttons to access, hence the chance to get a miss click is very rare. In case of mobile devices , the use of touch taps over the screen by fingers or by using a stylus increases the chances of miss tap due to the fact that the users are touching the area of the screen not the exact pixels. Reversing an action in a desktop browser for example is easy to handle when compared to that of a mobile browser which is more time consuming.
As mobile Internet is growing fast, for example, use of mobile search has grown by 500% over the past two years, while average Smartphone usage almost tripled in 2011. Many researchers are predicting that mobile Internet use will replace the desktop Internet use and is predicted to overtake in 2015. Mobile Internet usage is now a mass market with 69% of users having connection to the Internet through a mobile device in 2012. Smartphones are the most popular mobile access method to the Internet with 61% of respondents using Smartphones versus 37% for notebooks and 22% for tablets. Age is a differentiating factor with 82% of those aged 14-29 accessing the Internet on a mobile device versus only 45% for people above 50
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Future of Web and its Applications
Researchers aims to enable users to access all their home devices and to manage them all from mobile devices, or enable users to do all their life activates through mobile devices. Mobile users could check where is the car is parked now or even access and manage it. Client can order car from limousine service provider and most companies now enable their clients to check where the car is and know how far it is. This may sound like science-fiction right in the past, but most of this technology is available now in several parts of the world.
This evolution of handheld devices combined with new high-speed wireless data networks made browsing the mobile Internet a more compelling experience. This phenomenon is like the transition of the Internet when broadband access became widely attainable. The mobile Web is turning a corner and becoming useful to most users. In this article a survey of the literature concerning the Mobile Web and the cloud computing technologies is presented. The main concern is to provide the foundations for merging the two technologies in a mobile cloud computing model .
The mobile Web is simply accessing the World Wide Web (WWW) from mobile devices ranging from cellular phones to iPod touch. Such access does not require a desktop computer or a fixed landline connection. It constitutes the entirety of the Internet and is not limited to websites which have been specifically designed for mobile viewing. Handsets and mobile phones which have Web capabilities can search and browse the Internet from any place with a cellular signal available. Websites which are made especially for the small screen appear as scaled-back versions of their desktop counterparts, often with a numbered menu system for quick access to content. Web destinations which do not have mobile versions appear as if they were squeezed onto the tiny screen, and oftentimes have overlapping menus and links.
A study shows that by the end of 2013, the number of mobile connected devices will exceed the number of people on earth, and by 2017 there will be nearly 1.4 mobile devices per capita. There will be over 10 billion mobile-connected devices in 2017, including machine-to-machine (M2M) modules-exceeding the world’s population at that time (7.6 billion). Global mobile data traffic grew 70 percent in 2012. Global mobile data traffic reached 885 petabytes per month at the end of 2012, up from 520 petabytes per month at the end of 2011.
Mobile Web access today still suffers from interoperability and usability problems. This is partly due to the incompatibility of the format of much of the information available on the Internet with mobile devices, and partly due to the small processing power of the hard ware of mobile devices. The fact that most of the Internet video applications can be categorized as cloud applications, the mobile cloud traffic follows a curve similar to that of video applications. Mobile devices have memory and speed limitations that might prevent them from acting as media consumption devices, which can be substituted for cloud applications and services . For example, cloud applications and services such as Netflix, YouTube , Pandora, and Spotify allow mobile users to overcome the memory capacity and processing power limitations of mobile devices. Globally, cloud applications will account for 84 percent of total mobile data traffic in 2017, compared to 74 percent at the end of 2012.
Another key finding from the data is the type of application generating these data consumption trends. For smart phones and tablets globally, the top three application types are the same for both device types, although they differ in percentage rates. Video streaming and communications applications such as YouTube , Hulu, and Netflix rank highest on both device platforms, although data consumption is slightly higher on tablets. Information applications rank second on tablets (Google Maps, PulseNews, and Wall Street Journal). Social networking (Facebook and Twitter) ranks higher on smart phone, perhaps because the increased mobility of smart phones that allows users to instantly connect socially.
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What is the Mobile Web Mean?
Mobile Web refers to browser based web services such as the World Wide Web (www) by using WAP for mobile device such as a cell phone, PDA, or other portable connected device to a public network. Such access does not require a desktop computer or a fixed landline connection. The total number of mobile web users grew past the total number of PC based internet users for the first time in 2009 any web site accessed from a mobile device is mobile web, In 25 November, 2008 European communications write an article with title Mobile internet growth eight times greater than PC-based internet growth, says new analysis, this also tell us that the number of mobile web users become bigger than pc based users.
Mobile Web access today still suffers from interoperability and usability problems. This is partly due to the incompatibility of the format of much of the information available on the Internet with mobile devices and partly due to the small physical size of the screens of mobile devices and other device limitations.
Mobile web access was commercially offered in Finland in 1996 on the Nokia Communicator 9000 phone on the Sonera and Radiolinja networks, this was the first access to the real internet. The first commercial launch of a mobile-specific browser based mobile web service was in 1999 in Japan when i-Mode was launched by NTT DoCoMo.
Now day mobile Web primarily utilizes lightweight pages written in Extensible Hypertext Markup Language (XHTML) or Wireless Markup Language (WML) to deliver content to mobile devices. Many new mobile browsers are moving beyond these limitations by supporting a wider range of Web formats, including variants of HyperText Markup Language (HTML) commonly found on the desktop Web.
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