1. Software as a Service (SAAS)
1.1. Providers
1.1.1. http://wpengine.com/pricing/
1.1.2. http://onlinebusiness.about.com/od/webhosting/tp/Top-5-Managed-Wordpress-Web-Hosts.htm
1.2. Pros
1.2.1. you don't have to build or install anything
1.2.2. You don't have to manage anything
1.2.3. good to start with if we based it on wordpress
1.3. Cons
1.3.1. you have control on only the wordpress and the plugins, file access.
1.3.2. limited access
2. Infrastructure as a service (IaaS)
2.1. Providers
2.1.1. DigitalOcean
2.1.1.1. https://www.digitalocean.com/price-comparison-chart
2.1.1.2. $20 ,2GB ,2 Cores,40GB SSD
2.1.2. Amazon
2.1.2.1. 1.7 GiB memory $43
2.1.2.2. Micro 613 MiB Free for 1 year
2.1.3. Racketspace
2.1.3.1. $43.80, RAM: 1 GB vCPUs: 1 Disk: 40 GB
2.1.3.1.1. $131.40/mo Managed by Racketspace
2.1.4. Linode
2.1.4.1. $40, 2GB ,48 GB Storage
2.2. Pros
2.2.1. You can manage them how you like.
2.2.1.1. adding software or another service
2.2.2. More freedom
2.3. Cons
2.3.1. you have to build the service architecture
2.3.2. A company have to manage your servers
3. Platform as a service (PAAS)
3.1. $40/Month for our use
3.2. Providers
3.2.1. https://www.openshift.com/developers/pricing
3.2.2. http://www.appfog.com/pricing/
3.2.3. https://www.heroku.com/pricing#2-0
3.2.4. https://www.dotcloud.com/pricing.html
3.2.5. http://aws.amazon.com/elasticbeanstalk/#pricing
3.3. Pros
3.3.1. Less stuff to worry about
3.3.2. Someone else is going to manage the servers and the database
3.4. Cons
3.4.1. not very known or used in the Saudi, So you have to build everything and find someone knowledgeable to call in case something went wrong.