Technology Stack Analysis Helps Understand The Capabilities Of Various Korean Cloud Computing Server Companies In Virtualization And Container Support

question 1: what are the common technology stacks at the virtualization level among major korean cloud vendors?

at the virtualization level, local and international cloud vendors in korea generally use kvm / qemu -based solutions, and you can also see scenarios using xen or enterprise-level vmware . because kvm is open source, mature, and easily integrated with cloud scheduling (such as openstack, opennebula), it has become the first choice for most local clouds (such as naver cloud platform, kakao cloud, etc.) and many hosting services. in enterprise private cloud or hybrid cloud scenarios, vmware is still used by customers with complex enterprise needs. in addition, some services support bare metal instances for performance or compliance requirements.

core components

typical technology stacks include: hypervisor (kvm/xen/vmware) , libvirt/qemu , image management (qcow2/raw) and virtual network (open vswitch, linux bridge).

manufacturer differentiation realization

local suppliers will make differentiated optimizations in network plug-ins, mirror markets and localized consoles; international clouds have advantages in ecology (such as mirrors and markets) and global networks.

suggested points of concern

the important indicators when choosing are: whether it supports snapshots, templates, live migration, nested virtualization, and whether it provides bare metal instances.

question 2: in terms of container support and runtime, what capabilities do each manufacturer provide?

most korean cloud vendors support both traditional docker images and modern container runtimes (such as containerd , cri-o). at the same time, mainstream vendors provide managed kubernetes services (managed kubernetes), including cluster life cycle management, automatic expansion and contraction, log and monitoring plug-in integration, as well as private image warehouse and ci/cd integration. some vendors have also expanded container-as-a-service (caas) or serverless container offerings to simplify deployment.

container orchestration and ecology

managed kubernetes usually supports multiple network plug-ins (calico, flannel), storage plug-ins (csi), and service mesh (istio/linkerd) integration to facilitate the implementation of complex microservice topologies.

integration with virtualization

some manufacturers provide hybrid scheduling capabilities for containers and vms , allowing container groups and virtual machines to be deployed on-demand on the same platform, making it easier to migrate traditional applications and gradually become cloud-native.

things to note

when choosing managed k8s, focus on node automatic update strategy, network isolation capabilities, version upgrade frequency, and support for local regulations (such as data residency).

question 3: in terms of high-performance network and gpu pass-through ( gpu pass-through , sr-iov), what technologies are commonly used by manufacturers?

in response to the demand for high throughput and low latency, cloud vendors will provide virtual network interfaces and pci passthrough based on sr-iov to support gpu/fpga direct connection. nvidia gpu acceleration is usually implemented through drivers and cuda support, and some platforms provide partitioning capabilities (such as mig) or dedicated gpu instances/bare metal instances. for network performance optimization, common practices include the use of dpdk, sr-iov, and integrated load balancing/elastic network services.

typical scenario

scenarios such as machine learning training, real-time rendering, and high-frequency trading will give priority to instances that support gpu pass-through or bare metal.

supplier implementation difference

the gpu and network capabilities provided by local clouds in south korea are usually optimized for korean language support, low-latency interconnection, and local compliance, while international clouds are superior in global interconnection and multi-regional disaster recovery.

procurement advice

performance-sensitive projects should test throughput and latency on specific instance types, asking whether custom drivers, specialized firmware, and kernel-level tuning are allowed.

question 4: in order to ensure the safe isolation of multi-tenants, what strategies do cloud vendors adopt at the technology stack level?

multi-tenant isolation adopts different strategies at the virtualization and container levels. the virtual machine side relies on hypervisor isolation, virtual network (vpc/sg), subnet and hardware virtualization features; the container side uses linux namespace, cgroups, seccomp, apparmor/selinux and stronger isolation solutions such as gvisor and kata containers (lightweight vm+containers) to improve the security boundary. in addition, iam, key management (kms), private image warehouse scanning and compliance audit services provided by cloud vendors are also essential elements.

compliance and audit

in south korea, industries such as finance and medical care have high compliance requirements, and cloud vendors will provide log auditing, data encryption, and localized compliance reporting tools to meet regulatory needs.

an extra layer of container security

runtime security (runtime security) such as image scanning, behavior monitoring, and policy-based container network isolation (networkpolicy) are necessities in actual production environments.

select suggestions

when evaluating, you should verify whether it supports static and dynamic scanning, whether it can integrate third-party siem, and whether there is a zero-trust network policy and fine-grained role permission control.

question 5: based on the above technology stack, how to choose a suitable korean cloud service provider for different needs?

the choice of cloud services should be based on business needs :

projects that favor containerization and cloud native

give priority to vendors that have mature managed kubernetes , support rich cni/csi plug-ins, and have local image warehouse and ci/cd integration. if you plan to deploy across regions, you can consider an international cloud or a hybrid solution of local cloud and international cloud.

scenarios sensitive to latency and hardware acceleration

scenarios that require sr-iov, gpu pass-through, or bare metal should choose a provider that provides dedicated acceleration instances and low-latency network interconnection in south korea, and verify actual i/o performance.

industries with high safety and compliance requirements

priority should be given to local clouds that have local compliance certification, can provide encryption and auditing services, and can meet data residency requirements, or international clouds with local compliance support.