Migrating to Microsoft Azure- The 4 R’s

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Many businesses face the need to shift to the cloud so as to spice up performance, availability, scalability, etc. But, in order to make the best of the cloud, your business needs to undergo a number of time and labor-consuming transformations that end up to be quite risky sometimes. If you are wondering what measures should you as a cloud adopter undertake to migrate to the cloud seamlessly- here’s a snapshot of the 3 basic migration strategies that discussed in detail. 

Cloud migration strategies 
 
What is a cloud migration strategy? 
 
Migration is an approach that businesses adopt when moving its application to the cloud. Sure thing, there’s no universal strategy that fits for businesses as each applications vary in size and complexity. That’s why it’s important to apply tailored strategies for migration for unique business cases . Below are three of the foremost common migration strategies, listed along with their respective pros and cons. 

Rehost 
It is far and away the simplest method to migrate your application to the cloud. Also referred to as lift-and-shift, it’s exactly what its name suggests. You basically lift and relocate your physical and virtual servers into an IaaS solution, i.e. from on-prem facilities to the general public or private cloud. During rehost, a corporation transports a precise copy of its application, database, and OS, which is literally simply changing a number without introducing extensive changes to the system. 
 
Rehost could be a quite common cloud migration strategy thanks to its relative simplicity: almost no code alterations needed, quick ROI and comparatively low demands for IT-skills required to try and do the trick. Thus, you’ll be able to save plenty on the value of the on-prem infrastructure moving all of your portfolio to the cloud almost in no time, if that’s what you would like.  

The Pros of a Rehost Cloud Migration Model  

  • The Speed of migration is the biggest advantage, but may also prove to be a disadvantage at the later stage  
  • The model Supports testing and  if anything goes wrong in your new cloud environment, your familiarity with your systems allows you to trace the source of the problem more efficiently.    

The Cons of a Rehost Cloud Migration Model  

  • Increased  costs and potentially high risk. 
  • May involve risks and aftermath consequences. Require proven strategies  and expertise to make it work.  
  • Could cause poor user-experiences, which may prejudice future engagement.  
  • Your IT staff/ MSP need to optimize your new environment soon as possible otherwise,  you’ll probably waste money on storage and computing power and also miss out on efficiency and productivity gains. 
  • Requires a contingency plan in case if any of your workloads malfunction in the cloud. 

Refactor

 To refactor an application means to rearchitect it. By choosing this strategy, you’re stepping on an uneasy path, that’ll take you long before you reach your very ambitious goal. Refactor allows leveraging benefits of microservices, among others, with increased elasticity, availability, performance, so your applications areready to successfully compete with any cloud-first one. This strategy is future-oriented, because it implies extensive initial investments, and pays off and on, though. 
 
The Pros of a Refactor Cloud Migration Model 
 
-Same as rehost 

The Cons of a Refactor Cloud Migration Model 

  • It is complex and demands qualifications 
  •  There’s the risk of lock-in. 

Replatform  

Replatform combines the simplicity of rehosting and cloud-nativeness of refactoring. It suits better the requirements of the well-established players who want to maneuver their legacy systems which are too-structured to be easily moved to the IaaS. rather than changing the core of the applications, the applications are emulated through a virtual machine in order that legacy IT systems can become compatible with modern-day cloud technologies (Beacon Telecom). 

The Pros of a Replatform Cloud Migration Model 

– The changes that the application undergoes allow the business to enjoy better performance and reduced costs along with benefiting from time and effort-saving managed services. 

-The chance to substitute the fragile scripts and configurations with the reliable ones through introducing cloud-friendly modifications is an huge plus. 
 
– Requires careful assessment and expertise to handle. Among common mistakes committed by the inexperienced cloud, engineers are choosing inadequate cloud components to be replaced, poor configuration and complex architecture 

The Cons of a Rplatform  Cloud Migration Model 

– It implies additional costs. 

– The high quality transformation of the application poses higher demands for the qualifications of the cloud engineers. 

Need strategic and technical guidance on your journey to the cloud?  Click the button below to book a free Cloud Viability Assessment or check out our services here.

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