How to migrate my application or website to cloud?
“The cloud” has been in the scenario from quite a long time. If asked about defining cloud, we can define it in one phrase – “it is about doing a business in a better way.”
“58% of all organizations surveyed are embracing cloud, using public or private cloud for more than one or two small applications or workloads, up from 24% 14 months ago.” Based on IDC Cloud view 2016 survey.
Enterprises go for bulk application migration to cloud due to the bundle of benefits that are provided by the cloud hosting providers in India or around the world.
But migrating to cloud is not a cakewalk.When we say migration, we are talking about two important aspects “what” and “how”. Right from the selection of cloud service provider till the final step, everything should be clearly managed.
You need to decide your destination – whether to adopt public cloud services or private cloud hosting services, based on your needs. Now,instead of beating around the bush, let’s scroll over to the process of migrating your application or website on cloud.
How to migrate any application to cloud?
The process of migrating any website or application to cloud begins with the assessment of the application and its suitability to various cloud models. It includes financial assessment and security compliance needs. Based on this assessment, you have to decide which model will be best for your application hosting.
Gartner simplifies the process by suggesting 5 methods to select from before migrating any application to cloud:
Rehost: it can be done by redeploying the application or website on IaaS (infrastructure as a service) with minimal changes to it.
Revise: It involves a complete switch to the existing application code to fit the cloud environment.
Rebuild: It’s about discarding existing code of the application and rebuilding it on a cloud platform.
Replace: The existing application is completely discarded and built anew on SaaS.
Refactor: It includes running applications on PaaS (Platform as a service).
2.Analyzing application compatibility
Before migrating an application or website to cloud, it’s important to check the compatibility of the application across different browsers and OS. With online tools like Browsera that runs on cloud infrastructure, you can easily detect layout problems.
Cloud hosting providers check various compatibility issues during migration of any application or website. The compatibility tests depend upon the cloud service:
Port binding test
Global assembly cache
Apart from the compatibility, interdependency of application to its external environment should also be identified.
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3. Planning the migration
Planning the course of migration is very important. You cannot migrate unmanaged data because that would be a failure move. Be sure of what, where and how to migrate. You should always ask questions from you cloud migration service provider like, “where my data will live?” Or “what DR practices do you follow?” For ex. Microsoft Azure provides preconfigured VMs having either SQL Server or MySQL.
Before migrating the applications or website, follow an efficient route:
Migrate the more demanding applications first, like development and testing apps which demand more computing, so cloud would certainly fit their needs.
Work out for the ROI and monitor SLA agreed upon by the organization that provides cloud migration services.
4.Experiencing cloud in a “Test Environment”
One of the best things about cloud computing is that there are possibilities and scope for nearly everything. After deciding about the model and application to migrate, if you are still uncertain, you can always create a clone environment in cloud to test your application and its performance. You will also get to know about the quality of your service provider. You should ask yourself:
“How can processes be automated so that it is easier to manage and run my applications in cloud?”
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5.Making the final move
After making all initial assessments and working out a good-to-go strategy, the final move is to board the plane i.e. to implement migration. After your application or website is migrated on cloud, you should work on the following concerns:
Performance variation: You should know how your application is performing in cloud and how it is better than your traditional hosting platform.
Change in TCO: You should monitor the reduced cost of your IT infrastructure.
Optimizing your cloud: After getting live on cloud, you should never forget to explore the vast pool of resources and keep experimenting.
Migration to cloud is a critical business decision. A wrong move or an inefficient strategy might cost you wasted money and resources. To make sure that your move to the cloud will be fruitful, you should follow best practicesbefore migrating your application or website.