Hybrid Cloud Migration

More and more organisations are opting to move to the cloud today, including hybrid cloud. There are a lot of advantages in moving into the cloud, but the confusion lies in choosing the correct infrastructure and the correct way to do it.
There is a lot of hype about shifting the entire infrastructure of a company to a public cloud; a total “lift and shift.” There certainly are advantages in doing so, however, a complete lift and shift poses two major challenges:

COST: If you have applications that run continuously, then migrating them entirely to a public cloud can set you back a lot of money. This is because it becomes difficult for you to take advantage of your ability to shut down the infrastructure.

TIME: Moving an infrastructure completely to the cloud takes a significant amount of time. A total cloud migration can take weeks or months, and it might cause a massive amount of downtime.

Blending public-cloud and private cloud solutions to a hybrid cloud migration configuration is thus the best way to go. With hybrid cloud infrastructure, you can quickly benefit from the sophisticated cloud services while still maintaining some level of control of your in-house applications. To understand a hybrid cloud, one must understand the pros and cons of both cloud platform varieties: public and private cloud.

PUBLIC CLOUD

Public cloud platforms give companies access to a broad range of services, including advanced analytics, virtual-reality development, and machine learning along with basic storage and networking. Public cloud platforms give companies access to a broad range of services, including advanced analytics, virtual-reality development, and machine learning along with basic storage and networking.

PRIVATE CLOUD

Private cloud platforms have some automation features similar to public-cloud platforms including the likes of automated scripting of architecture patterns and one-click provisioning of servers. Companies can thus deploy new capabilities and protect their critical applications and data with security controls provided by private cloud platforms.

HYBRID CLOUD

Hybrid cloud migration is thus the go-to choice for many organisations. It gives you the best of both cloud services by allowing you to bring public-cloud capabilities with private cloud security. A hybrid cloud does not only ease the burden of managing costs, but it can also help prioritise which workloads to move to the cloud and when.

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There are 3 primary variants of hybrid-cloud systems:

This topology routes the traffic through private data centers while deploying applications completely or partly in the public cloud.

This allows companies to apply internal cybersecurity controls as per their needs along with taking advantage of public cloud services.

This topology places applications in the public cloud. However, users can access them directly with the help of CSP provided cybersecurity controls that are applied by default.

The data is stored in a private cloud, and additional security controls are applied to it.

This topology places applications and data in the public cloud. However, the cybersecurity controls are applied by using third-party services. The first step for a company which cannot directly move to a public cloud solution in one go would be to shift applications from a private cloud to hybrid, by deploying the private-front topology first. The next step would be to opt for a public front topology and finally the public-cloud or clean sheet topology.

How do we help you deploy progressive cloud systems?

REHOST

Rehost is alternatively known as ‘lift and shift.’ Rehost is infrastructure-as-a-service (IaaS), and this strategy involves taking the existing data applications and re-deploying them on the cloud servers. This method is ideally suited for beginners who are not accustomed to a cloud environment, or for very large systems where code modifications of a significant level are not possible in a short period.

REFACTOR

Refactor is alternatively known as ‘lift, tinker, and shift”. Refactoring is about making optimisations and changes for deploying platform-as-a-service (PaaS) model on the cloud. The core architecture of the applications remains unchanged, but they use cloud-based frameworks and tools. These tools and frameworks help the application use the benefits of the cloud potential.

REVISE

Revise is an additional layer above the previous two levels. This involves making architectural and code changes to the existing system, before carrying out the actual migration process. The major objective of revision is to optimise the application so that it can fully utilise the advantages of the cloud services. This process involves major code changes and advanced knowledge of the cloud.

REBUILD

Rebuild is similar to revise in its extensive approach but it discards the existing code base and rebuilds a new one. For example, the rebuilding process might involve moving from .NET to Java altogether.

This process is hence extremely time-consuming, and it is deployed only when a consensus is reached about the current solution not suiting the business needs.

REPLACE

Replace strategy involves directly moving to a third party and vendor-based application from an existing native application. Replace essentially creates software delivered as a service (SaaS). The existing application data is completely replaced with a third-party application. Everything else will be new. In conclusion, we help you discuss the perfect strategy for your organisation depending on your business needs. The strategy you choose can be the same for all applications of your company, or it can be different for different applications. There might also be cases when you need to adopt a combination of on-premise and cloud-based solutions.

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Deciding which apps to migrate and which to keep native

This topology routes the traffic through private data centers while deploying applications completely or partly in the public cloud.

This allows companies to apply internal cybersecurity controls as per their needs along with taking advantage of public cloud services.

This topology places applications in the public cloud. However, users can access them directly with the help of CSP provided cybersecurity controls that are applied by default.

The data is stored in a private cloud, and additional security controls are applied to it.

This topology places applications and data in the public cloud. However, the cybersecurity controls are applied by using third-party services. The first step for a company which cannot directly move to a public cloud solution in one go would be to shift applications from a private cloud to hybrid, by deploying the private-front topology first. The next step would be to opt for a public front topology and finally the public-cloud or clean sheet topology.

If someone asks me what cloud computing is, I try not to get bogged down with definitions. I tell them that, simply put, cloud computing is a better way to run your business.” – Marc Benioff, CEO of Salesforce.com

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