If you check other website then you will see that most of the websites are using shared or the virtual web hosting services. This service is not very expensive as in this service you have to share one web server with many other websites. Do not think this service will not be appropriate as it is cheaper. Many website are continuing with their business by taking service from shared web hosting UAE. They will provide limited amount of bandwidth and traffic but if you are not going have a very huge website then it will be enough for you.
But if you are going to make a huge website then you should take service of a dedicated web host. As here you can get unlimited amount of bandwidth and web space. As the service is only dedicated to your website you will have the whole server. You can be the only owner of the server.
Other than these two very popular types of web host another types of web host is the Virtual Private Server. This is different from above two types. In fact you can get benefits of both virtual; and dedicated server in this type of web hosting service. In this server the user can include diverse modules in their server. As a user of virtual server you can also able to get the authority to how much memory usage or CPU usage each of the module gets.
Most of the website owners will usually only require shared hosting service except you have a very large website with approx 5,000 visitors each day and very large scripts to maintain it. If really you have that type of website then you must get dedicated web host as no other web host can provide as much support as you will need for this type of website
Many type of operating system can be used to operate a website. The main three types of operating systems are LINUX, Windows and UNIX. You can take any of three of these for your website. Do not think that if you are doing a website hosting from a PC then you can only use Windows operating system. The type of web host you are using in fact has very little effect o the type of operating system you are going to choose.