Tiếng ViệtCloud Computing (Điện toán đám mây) has become the core operational backbone for virtually every modern enterprise. Rather than investing capital in physical on-premise hardware and maintaining costly server rooms, businesses can provision on-demand computing power, storage, and networking over the internet with pay-as-you-go economics.
“Cloud Computing fundamentally shifts IT from a capital-heavy expenditure (CapEx) to a flexible, predictable operational expense (OpEx).”
1. Core Concepts & 5 Essential Characteristics of Cloud Computing
According to NIST (National Institute of Standards and Technology), cloud computing is characterized by five foundational pillars:
- On-Demand Self-Service: Instant provisioning of computing resources without human administrator intervention.
- Broad Network Access: Services accessible across various client platforms via standard internet protocols.
- Resource Pooling: Multi-tenant shared infrastructure dynamically allocated according to demand.
- Rapid Elasticity: Capabilities dynamically scaled in and out in real-time to match application workloads.
- Measured Service: Transparent usage metering and billing based on exact compute consumption.
2. Cloud Service Models (SPI Framework)
Cloud services are divided into three primary tiers:
🔹 IaaS (Infrastructure as a Service)
Provides raw virtualized hardware: virtual servers, block storage, firewalls, and networking. Businesses maintain total OS and application control. Examples: Cloudytek Cloud, Linode Akamai, Viettel Cloud, VNPT Cloud.
🔹 PaaS (Platform as a Service)
Provides managed runtimes, databases, and deployment platforms so engineering teams can focus purely on code without managing underlying server OS or security patches.
🔹 SaaS (Software as a Service)
Complete end-user applications delivered directly via the web browser. Examples: Google Workspace, Microsoft 365, Salesforce.
3. Cloud Deployment Models
- Public Cloud: Shared enterprise infrastructure operated by cloud providers offering maximum elasticity and global reach.
- Private Cloud: Dedicated, isolated infrastructure designed specifically for single organizations with stringent security mandates.
- Hybrid Cloud: Seamless integration combining on-premise datacenters with public cloud environments for optimal workload distribution.
- Multi-Cloud: Strategy utilizing multiple cloud vendors simultaneously (e.g. Cloudytek + Linode + Viettel) to prevent vendor lock-in.
4. Technical Infrastructure & Security Considerations
Deploying cloud infrastructure requires careful consideration of latency, data sovereignty, regulatory compliance (such as Vietnam Cybersecurity Law), and automated multi-zone backup strategies.
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