Realistic Challenges and Strategic Approaches for Cloud Native Transition

IT Market Changes and Transition to Cloud Native Environments

The IT industry is changing faster than ever, and cloud technology is at the center of this shift. Moving away from traditional legacy infrastructure to a cloud-based foundation has become an essential strategy for enterprises. 

Cloud Native is the core of this transformation, referring to an approach where applications are designed, developed, deployed, and operated in a way that is optimized for cloud environments. This allows companies to adapt quickly to constantly changing markets while simultaneously pursuing cost reduction and efficiency. Furthermore, technologies such as Microservices Architecture (MSA), Containers, and Kubernetes are combined to provide systems that are more flexible, scalable, and highly available. 

This transition to Cloud Native is a key to maintaining corporate competitiveness and building new business models. This document aims to present the definition of Cloud Native technology amidst IT market changes, adoption cases, challenges during the transition process, and realistic alternatives. 

The Core Element of Digital Transformation: Cloud Native

What is Cloud Native?

Cloud Native refers to an approach of designing, developing, deploying, and operating applications in a manner optimized for cloud environments. This is not simply about migrating on-premise applications to the cloud (Lift and Shift). The goal is to create an environment where companies can transform services and applications to fit cloud contexts to meet changing market demands and respond agilely. 

Representative components include Containers, Kubernetes, and Microservices Architecture (MSA), which maximize agility and scalability. 

Core Components of a Cloud Native Environment

1. Container: Effective Application Management

- Supports packaging applications and their dependencies independently so they can be deployed and managed in a consistent environment.

- Allows applications to run identically anywhere, providing an ideal structure for cloud environments.

2. Kubernetes: Essential Management Tool for Cloud Native 

- An open-source platform that automatically deploys, manages, and scales containerized applications.

- Guarantees application availability and scalability, ensuring system stability.

3. MSA (Micro-Service Architecture): Flexible Architecture for Business Needs 

- Enables applications to be broken down into small, independent components so that development and deployment can be performed independently.

- Allows for rapid updates and expansion, and effectively handles situations where problems occur in specific services or business requirements change frequently.

4. CI/CD (Continuous Integration / Deployment): Automated Software Deployment Process 

- A process that automates the development, testing, and deployment of applications through Continuous Integration (CI) and Continuous Deployment (CD).

- Allows developers to deploy code changes to the production environment quickly and reliably.

5. DevOps: Efficient Management through Integration of Dev and Ops 

- A culture and process that emphasizes collaboration between Development and Operations.

- Ensures smooth application development, deployment, and operation, maximizing operational efficiency through automated deployment and continuous monitoring.

Advantages of Cloud Native

1. Scalability and Flexibility

- IT resources can be utilized efficiently as applications and infrastructure can be automatically scaled in and out through auto-scaling policies.

2. High Availability and Resilience 

- Through the MSA-based structure, a failure in a specific service does not affect the entire system, and automatic failure detection and recovery functions ensure service continuity.

3. Fast Development and Deployment Speed

- Code changes can be deployed rapidly using CI/CD pipelines, allowing for quick responses to market changes.

4. Minimized Vendor Lock-in 

- Provides a consistent operational model across on-premise and cloud environments through a standardized architecture utilizing containers and Kubernetes.

Cloud Native Adoption Cases

Cloud Native transition cases can be found in various companies such as Netflix, Uber, Amazon, and Baedal Minjok (Baemin). Among them, Netflix and Baedal Minjok are cited as representative examples of successful outcomes in the global and domestic markets, respectively. The common reason for the transition for these two companies was to secure scalability and stability, and to enable continuous service. 

Existing monolithic architectures could not handle the rapidly increasing number of users and data traffic, leading to issues where a failure would affect the entire service. To overcome these limitations, Netflix switched to MSA so that each service is operated and managed independently, enhancing flexibility and disaster recovery capabilities by preventing failures from impacting other services. 

Meanwhile, Baedal Minjok adopted MSA and Kubernetes to effectively respond to surging order volumes and traffic spikes. To achieve this, they operated order, payment, and dispatch systems independently and secured automation and scalability using Kubernetes. 

Although the two companies have different markets and business models, they were able to effectively respond to rapidly changing market conditions by maximizing stability and scalability through a Cloud Native environment. 

Key benefits gained by Netflix and Baedal Minjok from transitioning to Cloud Native: 

1. Assurance of Service Continuity
- By separating functions and services into independent microservices, the impact on the entire system was minimized even if a failure occurred in a specific service. 

2. Improved Flexibility in Response to Failures and Bugs
- In an MSA environment, if a failure occurs, only the problematic service needs to be fixed, allowing for rapid response.
- CI/CD pipelines allow for real-time identification of problems and quick recovery. 

3. Real-time Monitoring and Enhanced Service Continuity
- Performance degradation can be detected and addressed in advance by monitoring all microservices in real-time.
- Stable service operation became possible by automatically expanding resources such as computing, storage, and network using functions like auto-scaling. 

Strategic Approach for Cloud Native Adoption

Successful transition is not achieved simply by adopting technology. It requires a change in organizational culture, securing technical experts, and strategic planning. 

It is necessary to closely analyze various aspects such as the characteristics of the entire workload, situation, and cost to identify risks that may occur during the transition process in advance and prepare strategies to resolve them.
 

In this part, we will look in more detail at the realistic problems of Cloud Native transition and strategic approaches.  

Realistic Challenges of Cloud Native Transition

According to surveys of industry leaders, Cloud Native leaders and followers (latecomers) identified 7 major challenges in the operation and transition process, including tool and platform selection, architectural complexity, budget security, and hiring. 

However, the priorities of the challenges faced by leaders and followers differ. Leaders already have experience building and operating Cloud Native environments, so they worry about how to operate more efficiently and optimize 

On the other hand, followers are at the stage of considering a transition to a Cloud Native environment, so they perceive realistic aspects such as cost, time, and lack of technical personnel required for transition as problems. In other words, they face fundamental problems arising during the adoption process, and successful transition itself is a bigger concern than operational optimization. 

Details on representative major realistic problems are as follows: 

1. Cost and Time 

-Infrastructure Setup & Construction Costs: Designing container-based infrastructure and linking it with existing systems can require significant initial investment costs and time. 

-Architecture Redesign Costs: Converting monolithic applications to MSA requires major modifications to code and design, requiring more development resources than expected. 

-Parallel Operation of Existing Systems: Additional infrastructure and operational costs increase because existing systems and the new Cloud Native environment must be operated in parallel during the transition period. 

-Training and Competency Building: Learning and training are essential to effectively utilize Cloud Native technologies, requiring associated costs and time. 

2. Lack of Technical Talent 

- Difficulty in Securing Skilled Personnel: Currently, personnel with expertise in Cloud Native technologies such as Kubernetes, Service Mesh, and CI/CD are limited, making it difficult to secure staff for operations. 

- Burden of Retraining Internal Staff: If securing skilled personnel is difficult, retraining existing IT staff within the organization can be considered, but this can take considerable time and risks reducing existing work efficiency during the process. 

3. Operational Complexity 

- Burden of Keeping Infrastructure Up-to-Date: Technology changes rapidly in Cloud Native environments, requiring continuous updates and optimization. 

- Burden of Managing Diverse Services: Inter-microservice communication, state management, and maintaining data consistency can become additional management burdens. 

However, the priorities of the challenges faced by leaders and followers differ. Leaders already have experience building and operating Cloud Native environments, so they worry about how to operate more efficiently and optimize 

Strategic Approach Methods

The problems mentioned above show that this is not simply a technical change, but a complex challenge facing the entire organization. If these issues are not sufficiently reviewed, it can lead to increased costs, operational complexity, and project failure during the transition.Therefore, a strategic approach is essential for a successful transition. 

The following are strategic approaches to consider for Cloud Native adoption: 

1. Analysis of Existing Systems 

- The status, time, and cost of existing systems must be thoroughly analyzed for Cloud Native adoption.
- The architecture, operational methods, and data flow of existing systems must be checked to predict the time and cost required for transition.
-Through this, problems that may occur during the transition can be identified in advance, and appropriate countermeasures can be prepared. 

2. Establishing a Gradual Transition Strategy 

- Attempting to switch all systems to Cloud Native at once can significantly increase risk and cost burdens.
- Prioritizing based on function or importance and transitioning gradually is advantageous for reducing risk during the transition process and alleviating initial cost burdens. 

3. Systematic Transition to MSA 

- The process of converting existing monolithic architectures to MSA involves structural redesign.
- Major services and data flows should be segmented and converted into independent service units to secure operational flexibility and agility.
- In particular, the design must reduce dependencies between services and allow for autonomous scaling. 

Building a Cloud Native Environment via HCI

As explained above, many companies experience problems such as cost, time, transition risks, and lack of technical personnel in the process of building Cloud Native environments. To solve this, HCI (Hyper Converged Infrastructure), which can simultaneously operate existing VM-based systems and Kubernetes-based container environments, is attracting attention as the most realistic method to secure both flexibility and stability during the Cloud Native adoption process. 

Let's look at the specific advantages provided by HCI: 

1. Simultaneous Support for VM and Container Environments – Cost Reduction & Risk Mitigation 

- Costs can be reduced without the need to purchase separate additional infrastructure or solutions, and operational burdens that may occur during the transition are minimized. 

- It is effective in reducing initial transition costs and risks by allowing gradual transition while maintaining existing IT assets. 

2. Integrated Management – Maximizing Operational Efficiency 

- Computing, storage, and network resources can be managed integrally on a single platform, reducing operational complexity and increasing management efficiency.
- Operational stability can be secured by understanding failure responses and resource utilization status in real-time. 

3. Resource Optimization – Flexible Utilization of IT Resources 

- Supports optimized resource utilization according to workload changes through dynamic resource allocation and automated management functions. 

- Existing workloads can be maintained stably while expanding to new environments, minimizing resource waste and maximizing cost efficiency. 

4. Outstanding Scalability & Availability – Stable Service 

- Easy expansion is possible according to requirements as non-disruptive scale-in/out and scale-up/down are available.
- Provides a stable operating environment against the risk of failure or data loss through functions such as HA (High Availability), Backup/Recovery, and DR (Disaster Recovery). 

Successful Cloud Native Transition with POPCON HCI

Transitioning to Cloud Native is an important strategic opportunity that maximizes a company's business agility, scalability, and operational efficiency. However, the transition consumes immense time and money, and there is the realistic difficulty of a shortage of professional personnel capable of operating Cloud Native environments. 

POPCON HCI supports integrated management of VM-based systems and Kubernetes-based container environments on a single platform. This reduces operational complexity and enables a gradual transition considering resource optimization and scalability. By allowing the flexible introduction of new Cloud Native technologies while maximizing the use of existing IT infrastructure assets, it protects corporate investments and aids in efficient transition. 

Furthermore, it offers significant advantages in terms of data protection and availability. With auto-scaling, backup/recovery, and disaster recovery functions, it can minimize ransomware threats and data loss, while guaranteeing service continuity and supporting stable operations. 

Companies can achieve a stable Cloud Native transition and minimize risks during the process through POPCON HCI. As such, POPCON HCI is the optimal solution that overcomes the constraints of existing IT environments and helps enterprises transition to a Cloud Native environment more efficiently and stably. 

If you are considering a Cloud Native environment, prepare for the future with PIOLINK POPCON HCI.