About website host :
Web servers are computers with large resources which are connected to the internet. They can communicate with other such web servers all around the world. Your files are stored as web pages on these servers.
About Bandwidth :
Every time your website is displayed, it consumes bandwidth. This can be compared to every time you travel to work, you occupy road space. Bandwidth is also known as “data transfer” or “traffic”. These terms are connected with a gigabyte or GB value then that feature is basically bandwidth. It is the number of gigabytes of data which your website is permitted to move from the web hosting server to your users in one month. A gigabyte is roughly a billion bytes of data. You have to get enough bandwidth to assure that all your clients can access your website without exceeding your monthly data transfer upper limit.
About Disk Space :
Disk Space is called as web space. It is the total number of megabytes or gigabytes a web hosting provider provides you.
How much space do you need?
As per our previous discussion, if your website consists of 100 pages with just a few medium-sized graphics per page, then 30 megabytes of disk space would be suitable for you. But if user want to add some other features like forums, photo hosting, blogging or shopping ecommerce websites, then they need a lot more disk space.
How much does web hosting cost?
Shared hosting plans approximately start from $5.55 to $18.95 per month. This is sufficient for small business owners.
Virtual Private Server plans approximately start from $18.99 to $89.99 per month. If you want flexibility and security like dedicated server in low cost then you can choose this.
Dedicated hosting plans approximately start from $169 to $359 per month or more. It depends on your requirements. If you have high traffic and require heavy bandwidth then you can choose this.
Advantages & Disadvantages
Shared hosting is cheap. It is good for those just entering the realm of having your web presence. It is not good where security or reliability is concerned. This can be compared with staying in a rented apartment. If one of your neighbors is a criminal, all those in the house will suffer in a way.
If you want reliability and security, especially for websites involved with e-commerce like selling of products over the internet, it is better to pay more for a VPS or dedicated server.
VPS and Dedicated servers are like your own space where you can do almost anything in it. But!!! you must have the technical knowledge for it. Which is why companies offer Managed VPS and Dedicated Hosting Plans. What this means is that you have someone at the back-end taking care of all the geeky stuff.