In this blog, I will cover the considerations for developing and deploying applications for the Cloud along with the newer deployment models like Devops and Paas based approach.

Developing applications for the cloud is little similar to developing applications for the web but its not exactly the same. In the cloud, there are considerations like failure handling, traffic unpredictability, resource distribution which does not apply to typical web based application. Can we take any enterprise application and directly put them in the cloud and make it an Cloud based application? This normally does not work unless the enterprise application has the cloud application characteristics which I have described below.

Following are some of the important characteristics of a Cloud based application:

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In this blog, I will cover common methods of accessing AWS services using AWS console, AWS CLI and AWS Python SDK. The basic requirement is to have the AWS free account already created.

AWS console:

With AWS console, all activities could be done using the web interface. This approach becomes cumbersome when dealing with hundreds of VMs. Also, we cannot have a programmatic model with this approach.

AWS CLI:

AWS CLI for Windows or Linux can be downloaded from here. Using AWS CLI, all AWS services can be invoked using CLI.

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Amazon AWS is the leader in Cloud provider marketspace. AWS started out with IaaS but have also become a PaaS player now.  Amazon’s services extends Computing, Storage, Database, Analytics and Application services. There are multiple granular services under each of the above categories. The best way to get familiar with the cloud services is by trying them out. AWS has an excellent 1 year free tier program where users can try AWS services. The free subscription is with the smallest performance VM and it cannot be used for business purposes, but its a great tool to experiment and get familiar. I could not find the free option with Google compute engine. With Microsoft Azure, they have 1 month trial option.

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In this blog, I will cover a comparison of IaaS, PaaS, SaaS cloud services.

Following diagram nicely illustrates the layers and target customers associated with these 3 cloud services.

Continue reading Cloud service types →