More companies and organizations are migrating to Cloud daily.But sometimes migrating to the cloud can be tricky. Common challenges include finding the right cloud vendor or vendors; transitioning from years of legacy IT investments and hardware; and determining how to best manage cloud resources. A recent survey Report, shows that roughly half of organizations surveyed use cloud technology to lower costs. A large percentage said they use the cloud to better enable their mobile workforces and also to interact more efficiently with their customers and partners.
Business analytics is another driving force. “Cloud enables greater levels of data access and makes it easier to share data between IT systems and collaborate across the business,”. And because cloud data storage is relatively affordable, organizations can store and analyze vast amounts of information.
Clouds typically are one of four forms: private, public, hybrid, or community. They can be a combination of these forms as well.
- Private clouds: These are generally dedicated to a single organization for private use. They can be built either on-premises or off-site — the latter option usually provided by a third party — and they deliver virtualized application, communications, and infrastructure services. A private cloud implementation aims to avoid many of the objections regarding cloud computing security. Because a private cloud setup is implemented safely within the corporate firewall, a private cloud provides more control over the company’s data, and it ensures security, albeit with greater potential risk for data loss due to natural disaster
- Public clouds: A form of cloud computing in which a company relies on a third-party cloud service provider for services such as servers, data storage and applications, which are delivered to the company through the Internet. A public cloud can free companies from the potentially expensive costs of having to purchase, manage and maintain on-premises hardware and software infrastructure. Public clouds can also typically be deployed much faster and with more scalability and accessibility than on-premises infrastructure as a result of the public cloud provider’s expertise and existing infrastructure. A public cloud is owned and provided by a third party.
- Hybrid clouds: These offer best of private and public clouds. They enable an organization to retain private, sensitive information in a private cloud, but also provide access to a variety of cloud computing services offered by public clouds.
- Community clouds: These are collaborative systems shared by a limited number of organizations, often within the same industry (e.g. healthcare) or geographical region. Costs are split among the users. Community clouds can be hosted internally, or externally by third parties.
Do you believe that all clouds offerings are pretty much equal? No, not even close. Each cloud setup or provider brings its unique set of strengths and shortcomings. A private cloud, for instance, may offer greater flexibility but less scalability. And with a public cloud, if you’re already invested in a particular vendor you’ll have an easier migration journey by sticking with the same vendor’s public cloud offering.
Let’s see some stuff that need to be considered when planning to migrate to the Cloud:
Not all business applications should be migrated to the cloud, and enterprises must determine which apps are best suited to a cloud environment. Mitigating factors vary by industry, of course. Healthcare organizations, for instance, should carefully study how a cloud-based operation might impact their applications’ ability to meet stringent compliance, governance, and security issues. Another important factor: Your service contract with a cloud provider should clearly define the security services the provider is required to provide.
Your cloud service provider has an experienced team of cloud technology experts. But you should have cloud expertise in-house as well. An enterprise needs tech experts to ensure that its cloud platform delivers sufficient computing muscle. “You need a person/team that can implement your business’s cloud strategy for you and ensure it is optimally managed and controlled. This is how you can maximize the potential of the cloud for business benefit.
It’s wiser to slowly dive in the cloud service pool than to deep diving. Start by migrating modest services that will have limited negative impact should something go haywire. An enterprise should pick “the low-hanging fruit” for early migration to the cloud — for example, batch processing systems, big data analytics platforms, collaborative tools, or Web applications.
Large enterprises often find themselves facing a data-transfer dilemma: What’s the best way to migrate massive applications and terabytes of data to the cloud? (One tried-and-true method is to ship customer storage disks to the cloud provider.) Another big issue is finding the most affordable way to sync on-premises and cloud environments. The bottom line: Pre-move preparation is the best way to achieve smooth cloud migration.
We all know that the cloud allows organizations to focus on the core business without worrying about managing IT infrastructure. However, as cloud integrates multiple services running on geo-redundant data-centers with complex architecture, managing downtime can be challenging
One small thing that may have slipped your mind: your cloud service provider guarantees uptime for their service, not for yours. This means that even if the cloud is up, your app may be down.
SLA only refers to the physical availability of your virtual machine (VM). Your VM may be running, but you may not have access to the application. This would typically not count towards your uptime SLA, even though your application was not available. There can be plenty of reasons why apps may not be available and some of them may entirely be the fault of the development and deployment teams.