In the strategic decision of business operation; shifting inclination from Enterprise IT workloads towards Public cloud preference is surely a critical decision an organization may take. Since certainly there are some distinctive benefits of choosing cloud, therefore, the organization must do the migration in planned manner exception in this regard may sequence a wrong as well as costly inaccuracy.
- There are several primary thing organization primarily the concern in this particular regard are-
- Find out the needs business requirements of cloud migration from own organization aspect.
- Available service providers in the market providing certain service
- Analyze which service provider best meets the requirements of business needs
- The cost calculation for the operations of cloud migration
- The strategies to ensure the service continuity
- The mandatory security measures that must be taken into consideration
- Regulatory Compliance that must be ascertained
There are several other issues that should be answered prior to migrating to the cloud. In this particular article, seven most imperative issues will be covered while planning the strategic move towards cloud migration. The issues are—
- Resource usage versus availability
There are incidents when the minimum requirements for an application exceed the actual usage profile of the organization. Minimum requirements of specifications encompass an all-purpose operating window characterized by a specific software vendor with no consideration of the specific use case. In these particular incidents, it is expected to achieve significant efficiencies to infrastructure the appropriate cloud environment. It is vital to evaluate the CPU resource patterns to serve the purpose of cost-effective delivery of the required availability. Organizations most often ignore log-on storm in virtual desktop infrastructure (VDI) as well as in application publishing services which will lead user dissatisfaction if not taken into consideration when planning the infrastructure of the environment. However, in some cases, the appropriate cloud environment may be chosen to be compatible with the availability and resource utilization requirements.
Licensing may be taken for the specific application or for total infrastructure. Since licensing model requires all available resources that taken into account thus licensing incurs massive cost implications Licensing costs will enlarge if migration inclined towards a public-cloud platform. In addition to this particular fact that if the required application licensing is based on per hub and the cloud supplier does not offer the facility to configure the cloud environment per hub, it will have an adverse impact on the licensing expenditure.
- Existing access mechanisms
While taking the decision for cloud migration the existing process of using the applications and to what extent it will change after migration need to be taken into consideration. During the cloud migration planning phase, it is important to find out how to prepare the users in the best manner and the expected experience of users during and after the migration phase. If there is any up gradation or changes in IP addresses or DNS entries that must be communicated to the end users as the part of migration phase. Another vital issue is whether it is possible to migrate the certain number of user groups at a time or big-bang approach will be applied to implement the feasibility. Finally, it must ensure that while creating connection any authentication is required or leveraging WAN or MPLS network can provide the essential resolution.
To ensure the implementation of an appropriate level of security; the organization must regard security policies along with networking. To relax policies in some particular cases certain concessions may be required. On the other hand, a workaround can provide incorporation of virtual or physical appliances that harmonize the cloud design and meet up the compliance demands.
- IT service management (ITSM)
The purpose of service desk alignment, Maintenance and change window measures, and a general assessment of ITSM processes are ensuring alignment to the requirements of the organization while more elements of the environment are outsourced.
Appropriate understanding of the relationships between applications plays a vital role while planning the sequence and manner in which cloud migrations take place. To avoid limited functionality to systems while addressing dependencies or unplanned outages during the process of migrating workloads organization need to discover dependencies inappropriate timing.
The authoritative aspects that influence the infrastructural designing of could migration are Data protection requirements, the mode and the frequency in which replication takes place, aligning the recovery time objective (RTO) and recovery point objective (RPO) of applications to their business criticality and so forth. Proper sourcing of suitable solutions needs to be ensured in terms of capacity and costs to provide for data transfer at adequate levels.
- Application architecture
To make sure compatibility view and optimization support at the cloud platform organization should review the architecture of every application. It is difficult to judge the effectivity and efficiency in Monolithic systems since this specific system creates complication to respond quickly hence removes the cloud’s quickness benefits. Review the architecture of every application ensures the accurate decision throughout the migration process of these applications to a cloud environment.
Cloud-only approach is recommended by various providers as shifting production applications to the cloud requires careful thought and it requires not only the openness to the re-architecture of application space but also sincerity in surrounding processes and policies but the Cloud-only approach may not always be the best solution for all business applications. To generate a hybrid resolution a cautious plan that accounts for all IT environment factors and business outcomes is the key role player.
Therefore the desired infrastructure for many businesses will be designed in such manner so that the infrastructure will deliver cloud at the core at the same time flexible enough to accommodate some workloads on physical infrastructure.
After taking the decision of choosing a cloud migration as an option, there are three basic options in the cloud type.
- Public: here resources are completely hosted by a cloud provider like Amazon Web Services (AWS).
- Private: a firm can create own private cloud using a policy.
- Hybrid: resources are stored over both private and public platforms.
There are six tasks that should be on checklist while crafting a booming cloud migration strategy. These are mentioned below—
Consideration regarding the application or data
All application is not appropriate for the cloud therefore during the promise of improved flexibility and scalability make cloud migrations seem like a can’t-miss venture. Legacy applications, mission-critical workloads as well as sensitive data may not be suited for the public cloud. However, to keep the confidentiality of critical information and to take advantage of cloud computing simultaneously enterprises can use a private or hybrid cloud system as their data center migration strategy.
The amount of resources each application uses is also the important issue to consider. The public cloud refers multi-tenant environment, where applications share resources. Furthermore, noisy neighbors can be a subject whilst auto-scaling in the public cloud scales resources up or down based on demand, it must keep it in mind that High spikes in demand may increase bandwidth costs and hinder an app’s performance.
Cost Efficiency is the prime feature that instigates many organizations to move to the cloud system. Cloud migrations decrease hardware and IT staffing expenditure. Though, the financial benefits may vary from application to application. Any particular application such as mobile applications, in which demand levels randomly increase or decrease, yield a handsome ROI return if the move to the cloud system. But in the cases of applications where legacy enterprise hardware is in action — might actually be more costly to run in the cloud system.
Furthermore, hidden expenses are an additional burden for the project in the case of cloud migration; Hence organizations must consider the issue while planning for network and bandwidth costs. Here accuracy in the calculation is a major topic so pricing calculators to track cloud costs, such as Amazon Web Services, Microsoft Azure Pricing Calculator, and Cloud Watch has been used to get the accuracy in calculation.
Choosing the cloud flavor
Along with Application and expenditure considerations contemplating a data center migration to the cloud choosing the right cloud environment is also an important aspect. Public, private and hybrid clouds all have their distinctive benefits and features and by through analyzing determining which model best meet their needs are an important step in the cloud migration. Private clouds provide efficient control in an on-premises environment. Private cloud users are responsible for their own security and performance monitoring. In a hybrid cloud — a mixture of private and public cloud services with orchestration between them — performance matter like latency and dependency may arise. Public clouds, such as Amazon Web Services or Google, provide organization an extremely scalable environment with a pay-per-usage model. But due to lack of control highly regulated industries, such as financial services, are less likely to be fit in the public cloud.
Assuring governance and security in cloud migration
Organization’s governance strategy may interrupt a cloud migration, as now-a –day’s organizations move data to the public cloud, project control reduce and responsibility shifted towards the cloud providers. Therefore, organizations must plan their governance strategies in such manner so that they can get the opportunity to rely less on internal security and control, and more on their cloud provider’s assistance. Enterprises must also ensure that provider’s certifications are up-to-date to provide the cloud migration service. Security concerns are a very vital issue for organizations those are planning cloud migrations, so it’s important to have a contingency plan for probable breaches, failover and disaster recovery. However, having additional security tools or services can increase overall cloud expenditure.
Plan and Prepare challenges for cloud-to-cloud migration
Cloud migrations can shift data from one cloud to another and incorporate moves from one provider to another, as well as migrations between private and public clouds. However, the migration procedure from private clouds to public clouds is complicated. There are third-party tools — such as those from Accenture or Racemi — are available for assistance, but no comprehensive tool to run the entire migration procedure. Hence some enterprises prefer to design their own services.
Furthermore, cloud-to-cloud migrations require manual labor. For taking the preparation for migration from one provider to another, firm need to examine their applications and make all required configurations for operating systems, virtual machines, networks, and so forth.
Specify cloud migration strategy
Once the firm has considered data, costs, security and all the necessary requirements for cloud migration it’s time to come up with an implementation. Here the most important aspect makes a decision on what to do with leftover on-premises technology.
Potential Benefits of Cloud Migration
Shifting towards cloud system may resolve many critical issues. Here are some typical scenarios that will describe the benefits of choosing cloud migration options.
- The requirement of fast application implementation and deployment, and strategy to focus more on development while reducing infrastructure overhead.
- Experiencing increased traffic in the application and becoming complicated to scale resources on the fly to meet the increasing demand.
- The necessity of reducing operational costs, while increasing the effectiveness of IT process.
- Client’s requirement is geographical business expansion and firm facing challenge to set up a multi-region infrastructure – with all the associated maintenance, time, human, and error control effort.
- Growing storage requirements is becoming more difficult and expensive.
- Organization preference is developing widely distributed development team and allowing remotely located employees to access applications and work via the Internet in Cloud computing environments.
- The requirement to establish a cost-efficient disaster recovery system .Cloud disaster recovery system can be executed time- efficiently and give you much better control over firm resources.
- Tracking and upgrading underlying server software is an essential and time consuming, and the process requires periodic up gradations. Through a cloud provider will take care of this software automatically.
- There are several cloud computing models handle many administration tasks such as software upgrades, database backup, and periodic maintenance.
- Shifting Capex to Opex: Cloud computing shifts fixed IT expenditure to a pay-as-you-go form, Organizations; especially for startups this specific feature is an attractive benefit,
Throughout the article, we put effort to cover crucial issues that need to be unfolding while considering a move to the public cloud. There may be some other issues may vary upon situations but in general, cautious planning and comprehensive deliberations are key towards the move to the successful public cloud.