“The Cloud” is a distributed collection of servers, located around the globe, that host software, applications, databases and infrastructure which can be accessed over the Internet. It enables users to access computing resources on demand instead of installing and managing their own physical servers.

What is Cloud Migration?

Cloud migration is the process of moving a company’s digital assets, services, applications, databases, IT resources from on-site (“on-premise”) servers into the cloud. It is often moved to public cloud provider’s servers, but it is also about moving from one cloud to another.

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What are Cloud Services?

The resources available in the cloud are known as “services,” since a cloud provider actively manages them.

What are Cloud Service Models?

There are three types of managed services available through cloud providers.

Software as a service (SaaS) provides access to software applications in the cloud via a web browser. Users can access SaaS applications on any device, from any location at any time, simply by connecting to the internet.

Platform as a service (PaaS) provides organizations with an on-demand environment, development tools, and operating system. PaaS offerings are designed to help developers quickly create mobile or web apps.

Infrastructure as a service (IaaS) provides organizations with on-demand access to cloud infrastructure such as servers, storage, and networking to build applications.

What are Cloud Deployment Models?

There are four types of cloud deployment models, which refer to where the cloud servers are located and who manages them.

 Private Cloud

A private cloud is operated by only one organization that has exclusive, dedicated access to the resources on it, usually via a private network connection.

Public Cloud

A public cloud is operated by a cloud service provider that provides cloud computing services shared between multiple organizations. There are typically multiple “tenants” renting space and consuming resources on virtual machines that reside on the same physical server.

Hybrid Cloud

A hybrid cloud combines public and private clouds, and may even include on-premise legacy servers, which allows organizations to choose the best cloud for different workloads. Organizations may use private cloud to run business-critical applications and use public cloud for others.

Multi Cloud

A multi cloud is the use of more than one cloud service from more than one cloud vendor. For example, an organization may use Salesforce, a cloud-based CRM software and AWS, a cloud service provider creating a multicloud with two different vendors.

What are the Steps for Cloud Migration?

  1. Planning: First, you must decide what you want to move to the cloud and how you want to do it. This involves figuring out which cloud provider to use and which migration method fits your needs best.
  2. Preparation: Before the move, you need to prepare your digital stuff. This might involve organizing files, updating software, and making sure everything is ready to be moved.
  3. Migration: Now comes the actual move. Depending on what you’re moving, this could involve copying files over the internet, transferring data using special tools or setting up new virtual servers in the cloud.
  4. Testing: Once everything is in the cloud, you need to make sure it works like it is supposed to. This involves testing things like performance, security, and compatibility to make sure there are no problems.
  5. Deployment: Once you are happy with how everything works in the cloud, you can start using it for real. This might involve making final tweaks and adjustments to make sure everything runs smoothly.
  6. Optimization: Even after the move, you might need to make improvements to your setup. This could involve adjusting settings, optimizing performance or adding new features.

What are the Types of Cloud Migration?

1. Rehosting (Lift and Shift): This is like picking up your existing setup and moving it to the cloud without changing much. It is quick and easy but might not take full advantage of cloud features.

2. Replatforming (Lift, Tinker, and Shift): With this, you adjust your setup to make it work better in the cloud. It is a bit more work than rehosting but can offer better performance and cost savings.

3. Refactoring (Re-architecting): Here, you redesign your applications to take full advantage of cloud features. It is more complex and time-consuming but can lead to big improvements in efficiency and scalability.

4. Repurchasing: This involves switching to a different software or service that is already built to work well in the cloud. It is like upgrading to a better tool instead of just moving the old one.

5. Retiring: Sometimes, you might decide you do not need certain apps or systems anymore, so you simply get rid of them instead of moving them to the cloud.

6. Retaining: This means leaving parts of your setup as they are, either because they are too difficult to move or because they work fine where they are.

What are the Pros and Cons of Cloud Migration?

These are the key factors to consider when evaluating cloud migration for organizations. A thorough risk assessment and proper due diligence is needed to make informed decisions on cloud migration.

Pros:

1. By using cloud, organizations can save money because they do not need to buy and maintain expensive hardware and software. They just pay for what was used.

2. Cloud helps businesses to easily adjust how computing power and storage space they need, so they can grow or shrink as needed.

3. Workers can access their files and programs from anywhere with an internet connection, making it easier to work remotely or collaborate with others.

4. Cloud platforms offer advanced tools like artificial intelligence and big data analytics, which can help companies innovate and stay ahead of the competition.

Cons:

1. You rely on the internet and the cloud provider’s services, so if there is an outage or the provider has issues, you might not be able to access your data or programs.

2. While cloud providers have strong security measures, businesses may worry about the safety of their sensitive data being stored off-site.

3. Moving to the cloud can be complicated and time-consuming, especially if you have huge data or complex systems to move.

4. While cloud services can save money, if you are not careful, you could end up spending more than you planned, especially if you do not monitor your usage closely.

What is the Future Trend in Cloud Migration?

Cloud migration is going to be more sophisticated as cloud providers build enticing offerings and continue to simplify the migration processes.

The future of cloud migration is increased automation to significantly reduce manual intervention, to provide greater flexibility for data storage, to improve access speed, to reduce risks, costs and efforts required in the process. Future trends and advancements for cloud migration include Artificial Intelligence, Machine Learning, and automation. It focuses on self-automation, self-learning, personalized cloud, high data security and privacy. Dynamic creation of cloud deployments will be done using AI. AI will analyze the organization’s migration requirements, and create a complete solution of hundreds of containers automatically, reducing 90% of the manual tasks done today.

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