What’s the Difference Between VPN and Cloud Computing?

For less technical users there is always a lot of confusion between different terms used in modern tech and cyber world, those terms look like Chinese for many people and they often mistake one term with another. One of such terms is VPN and Cloud Computing. While they don’t look similar, if you know the basic meaning of each term, you may think they are used for similar needs and are quite the same, but that’s not true.

If we explore each of them separately, explain their deep meaning and typical usages, it is clear that these two are actually different pieces of technology, used by different kinds of users, for different needs. First of all, let’s start with a VPN.

What is a VPN, why it is needed and who use it?

VPN is the abbreviature and stands for Virtual Private Network, a small network which connects a small list of devices with the internet, in a secure way. VPN does the nearly the same job as your Internet Service Provider, but there are some differences, the main difference is that a VPN is way more secure than ISP.

On a typical IPS, web requests from your web browser (such as Google Chrome, Mozilla Firefox, Opera Mini…) are directly sent to a website server which you trying to connect. The website’s web server processes requests from your web browser and sends back data required by the browser to show you the web page. All of your online activities, browsing history, and usage data are recorded and saved by your ISP, so that they can use it in some ways if needed.

That’s the main problem with an ISP, your data is at their hands and can be used in many ways. Also, they are in control, they can restrict access to any website they want or limit your speed for certain websites. Usually, ISPs are limiting access speed with torrent websites or some of them completely block torrents.

On the other hand, VPN is “your own” network, your own Virtual Internet Service Provider where you are in full control, limitless in every way, free from any limitations and controls. Your data, browsing history & online activities are not recorded, is not monitored or controlled. You are allowed to visit any website you want, at maximum possible speed and only you can disable access or limit access speed to any website(s).

Here’s how VPN works: web requests from your web browser are sent to a secure VPN server, encrypted for additional security and forwarded to an original web server of the website you are trying to connect. Then, the website’s web server sends the requested data to a secure VPN server, the data is encrypted and sent to your browser. VPN software installed on your PC, Smartphone or Browser itself decrypts the encrypted data and gives it to the browser which is used by the browser to show you the webpage.

Just like that, best vpn services not only give you limitless access but also encrypting and protecting each bit of your data. Of course, for a VPN to work you also need internet connection from an ISP, but your ISP can’t see any of your real activities and data, their records are useless, harmless and they can’t limit or control you.

VPNs are used by many kinds of users, including ordinary persons who care about their online security and privacy, small & big offices, companies which need more security and more control over their employers and how they use internet access at the job.

What is Cloud Computing, why it is needed and who use it?

Cloud Computing is also a network, big network of servers & computers connected with each other in the cloud, connected to the biggest network – the internet.

Cloud computing is not used for a certain task, it can be used for a wide range of things, for everything that needs computing power, computer power & processing. It can be used to encrypt or decrypt big data in seconds, do huge calculations in no time, send & receive a large amount of data…

Cloud computing is used by larger companies and brands who need a lot of computing power, who have large data to process and transfer. Cloud computing is also used by developers and development teams who work on large projects. A VPN service providers also usually use Cloud Computing as it a flexible & secure way to process large data.

The Evolution of Mobile Apps

When we are looking at mobile industry, we realize it is one of those industries that was always important but still received a huge boost in one moment. We can even feel the huge difference between old mobile phones industry and new mobile phones industry by looking at its products and their creation. For now, how phone apps are created is slightly different than it was few years ago, now it is much more advanced, more complex and more attention demanding process than it was few years ago.

We can clearly see, there is really a huge difference between old cell phones, new mobile phones and latest smart phones apps, they are on completely different level, used for different purposes.

A bit of history…

When first mobile phone was created by Motorola, there was no any apps for it, it was a simple device that could only call and that was it. Still, it was very innovative technology for that time. We can consider its simple software to be first mobile app ever, but it really is far from what we call apps nowadays.

Fast forward to more recent phones, cell phones, they became gadgets with several features, not only good for calling. Cell phones were able to send SMS messages, play sounds, set alarm… There were few preinstalled apps, part of the software but that still is not apps which people could use effectively.

With the development of new technologies and evolution of mobile industry, we finally got new type of mobile phones – so called feature phones. Feature phones really turned mobile phones into all in one gadgets that could do many basic things and could be used for many different purposes.

Feature phones could do many things: make a call, send a SMS message, set alarm, take pictures, play music, access to internet, upload and download files & data, run games, and most importantly – run mobile applications. That is early stage when real mobile apps were introduced. There were apps for many different purposes, there were browsers, chatting apps, games, productivity apps, file managers, email apps, maps and many more… But still, mobile apps were always there for just too basic functionalities, they were limited in many ways by software and more importantly by hardware.

Mobile industry got its biggest boost with the release of new type of mobile phones – smart phones. Those devices really started to change mobile industry forever and opened doors for new opportunities, turned mobile apps & games industry upside down, give it opportunity to evolve much further.
Smartphones had way more powerful hardware than older feature phones or cell phones, smartphones had much more flexible operating system and more freedom in software.

As smartphones was way better than old feature phones, with more features, many improvements and support for all kinds of advanced apps, they quickly become popular and now, in modern days, almost everyone has a smartphone.

As there is massive number of smartphone users all around the world, as there is powerful hardware used in smartphones and advanced, more flexible operating systems such as Android, iOS and Windows Phone, smartphone apps market has become very good place for developers to develop apps for it.

With so many developers targeting mobile apps market and so many people using smartphones every single day, many times per day, mobile apps & games industry has seen incredible evolution. Nowadays, there are mobile apps for almost anything, be it work, fun or study. There are millions of apps available for mobile devices, with top ones having more than billion downloads in Android’s Play Store.

Mobile apps nowadays are complete solution, full with all functions and features a PC software or website may have. Now third-party apps downloaded from official stores or external sources can replace preinstalled apps and their functionalities, improve smartphone’s features and add additional ones.

Mobile smartphones have taken over and now people tend to use their smartphone & mobile apps more frequently than they use computers and its software. Mobile gaming has also evolved a lot and now we see many popular PC & console games getting ported on mobile devices what once was too optimistic dream.

What we have now

Now we finally got mobile apps industry with a lot of potential, increasing day by day, giving opportunities to more developers, better mobile apps environment with availability of many really useful apps that turns smartphones into real all in one gadgets, useful for everything including gaming, studying, working and entertainment.

The way how phone apps are created is very different now, finally we have got a lot of capabilities to develop high quality, good looking, feature rich apps that will have great results for users and developers. Now there is no need to limit mobile apps and create “lite” versions of actual service to fit for mobile devices.

Introduction To Cryptography

A cryptography has been around in its earliest forms for the centuries. One of the earliest known facts of cryptography was by Julius Caesar when he didn’t trust his messengers and replaced every A by D, every B by E, every C by F… in his messages so that only the one who knows shift by three rule could actually read & understand the messages. Of course, that was one of the simplest and one of the earliest form of cryptography, what is cryptography in computer science in the modern times is way different, much more complex and much more advanced.

Unlike in old times, nowadays we have machines like computers and servers which allow us to encrypt and decrypt important data within seconds, automatically, so there is no need to manually do the hard job of encrypting or decrypting, but that does not mean that it is easier in any way. The modern encrypted information is nearly impossible to decrypt if you don’t know how all of that works and you don’t have necessary decryption keys. Of course, you can learn cryptography online from your comfortable house and become a master of it, but the learning process will not be a piece of cake even if you are doing it online, from your home as modern cryptography is complex in its nature for maximum security.

Before one decides to become a master of cryptography, it is a good idea to fully understand what it is, how it works, who uses it and for what. Let’s answer all the questions one by one.

What is Cryptography?

Cryptography is a rule of encrypting sensitive & important information in such manner that it becomes useless for everyone who can’t decrypt it. A well-encrypted information is impossible to open, read or understand, impossible for everyone including machines such as computers & servers or human beings.

There were times when cryptography was exclusive to government, military, and billionaires, but thanks to the evolution of modern technologies and the world, it becomes very common, widely used way, available for everyone. Nowadays everyone can encrypt their data for free, easily in a little time, but unfortunately not many use it on daily basis…

Regular people think that encryption is only needed by people who have a lot of money and very important information, but actually, in our age of internet where data privacy is always at risk and hacking attacks daily events, it is a good idea even for regular people to keep their private & important data protected by cryptography.

While most of the people don’t use cryptography and encryption to protect their data, most apps, websites and other digital products that have access to your private data encrypt it before transferring to their servers so they can protect your privacy.

Before there was cryptography available for everyone, it was a big risk to use your credit card for online purchases or enter your personal sensitive information such as passwords to even trustable websites and apps as there was always a high risk that someone in the transfer process will steal your data away and use it in many harmful ways. E-commerce and online stores had a lot of trouble of protecting customer data as it was always an easy target for hackers.
Thanks to the appearance of advanced encryption algorithms and digital cryptography, data leaks is less problem now as most of the times any sensitive data is transferred online, it is transferred encrypted so there are no risks of hackers getting their hands on unprotected, sensitive data.

How Does Cryptography work?

As cryptography is very complex and advanced technique nowadays which involves many algorithms to ensure maximum safety, there are too many deep details involved in the process of cryptography, but that is how encryption mechanism works basically:

A sensitive information is used to generate encrypted data and special keys which can be used for decryption, the encrypted data is transferred to the desired location, the receiver has necessary keys and information which is used to convert encrypted data back to normal, usable data.

Both, encrypted data and decryption keys are useless without each other.

Who use Cryptography and why?

Nowadays, cryptography is used by all reliable online stores, any website or app that requires sensitive data such as credit card info or passwords, operating systems such as Android to protect its user’s data and social networks such as Facebook to ensure all their data stays secure while transferred or saved for no usage.

For anyone who is interested in cryptography and is looking for an answer to questions like what is cryptography in computer science or why it is used, to put it simply, it is a necessary technology in modern days used by nearly all digital products that have any relation with sensitive data.…

How To Make Your Data Always Available

A lot of businesses and companies are highly depending on the large data and for them, data availability is everything. Companies which use large data sets for their business model or simply need a lot of data available 24×7 for management & servicing purposes, require an environment where the data is as safe as possible, available all the time.

Well, thanks to the modern technologies and the evolution of the internet & cyber world, always available data, backed up with ultimate security is easily available for everyone. With the appearance of Cloud Computing, now it is finally possible to store or even process large data in no time, access it from anywhere in the world and use it as you need, at very good prices for such great service.

Every day more and more businesses and companies start to use cloud computing services for their data transfers, storage and processing, to ensure they are on the top of their competitions and backed up by latest tech product. The question may arise, what is cloud computing and how it can benefit businesses, brands, companies, IT specialists and developers.

What is Cloud Computing?

In the modern tech world, cloud computing is a term used to describe a network of computers and servers connected with each other in the cloud, sharing same resources and data, creating big pool of powerful computing power. The pool is connected to the internet, so a client can send and receive data from any location and place where internet access is available.

Massive number of machines (computers & servers) are included in cloud computing network so combined computing power is huge, big enough to complete multiple really large operations at the same time.

How does Cloud Computing Work?

Every job received by cloud computing is handled by combined computing power, so it can be processed very fast without issues such as overloading. Each job only receives needed amount of cloud computing power to ensure there will be no wasted computing power. For this reason, cloud computing can be very cost effective compared to normal computing where all machines have to be enabled in case more computing power is needed.
In a cloud computing networks, allocated resources can be increased or decreased as required by the job, so on demand resources management makes it very flexible and cost effective service that can handle large amounts of data, receive, process and transfer it without overloading.

Why Cloud Computing is Secure and Always Available?

One of the reason why cloud computing has been so popular since its appearance and why it is becoming more used every day is its high security level and always availability. When you upload any data in the cloud computing network, you know it is safe and there is no way you will lose the data.

The reason why cloud computing is so safe is its technology side. Every data uploaded or transferred to cloud computing network is stored via combined computing power which means the data is available in the cloud, backed up by massive number of servers & computers which ensures data safety and prevents any data loss. In a typical data storing system, if a computer or server is damaged, all the data stored on it becomes unavailable and may loose forever if the disk containing data is heavily damaged.

In a high quality cloud computing network, all data is saved in the cloud, syncing in real time so even if one or several machines are damaged, the data is still safe, available and ready for usage as normal. As cloud computing networks usually include a huge number of machines connected with each other, sharing resources with one another, there is slightly less chance of machine getting damaged and there is no chance of data loss. Also, machines used in cloud computing are regularly monitored to ensure they work properly and they are placed in an environment which is suitable for such machines, environment which keeps cool and dry.

Who need Cloud Computing?

Cloud computing is used by many different kinds of companies and brands, needed by many developers and development agencies.

Any brand or company which need to save large amount of data in a safe environment, access it anytime or process and transfer it, should use cloud computing. Developers who work on larger projects where big data is constantly used or data availability is important also use cloud computing.