In this increasingly technological age, we are witnessing a boom in digital modernisation and transformation (across all areas of business). The current pandemic situation further accelerates this trend and a successful digital transformation will, for many firms, make the difference between success and failure in the coming era.
We cannot address this topic without bringing cloud computing to the table. An increasing number of companies are studying the possibility of shifting their applications to the cloud and reaping the benefits of not having the responsibility and skills to maintain an on-premises infrastructure (this study suggests that “more than $1.3 trillion in IT spending will be affected by the shift to the cloud by 2022”).
Cloud computing usually has characteristics that your business can immediately take advantage of such as high availability, scalability, fault tolerance, security and many more.
Besides the technical aspect, migrating your applications to the cloud can have a meaningful impact on company costs and productivity.
With this change, it is possible to predict costs (with zero upfront expenditure as no on-premises infrastructure is needed) because you only pay for what you use. You should also consider the fact that you can use and pay for additional resources when needed and stop paying for them at any time. Also, with the rapid uptake of cloud computing, cloud providers can take advantage of economies of scale which then translates into lower prices for their customers.
All the technical skills needed to build and maintain data centre infrastructure are ensured by the cloud provider so you can boost the productivity of your business by letting your IT teams focus on application development.
When discussing the cloud migration process we are talking about planning how an organisation should move its data and applications out of the office and into the cloud.
The first step should be an assessment of the environment, to decide which resources should be migrated and what migration strategy should be used for each individual resource. The next steps should be selecting the cloud provider and executing the migration itself.
In this article, we will just cover the first step by presenting the most common strategies used for cloud migration (with some practical examples, for migrating real-world applications).
We will focus particularly focus on two cloud service models, IaaS –“Infrastructure as a service” and PaaS – “Platform as a service”.
The main difference between these two is in responsibility distribution: