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Cloudflare Global Network & Application Services

Cloudflare protects and accelerates websites, applications, and APIs on a global anycast network spanning 330+ cities. DDoS protection, WAF, bot management, and CDN — delivered from a single platform.

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Expernet Partnership
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Web performance and application security engineers supporting design, deployment, and operations.

Cloudflare at a glance

Cloudflare is a connectivity cloud platform built on a global anycast network with points of presence in 330+ cities, delivering security and performance for websites, applications, and APIs at the same time. A significant share of global internet traffic flows through the Cloudflare network, and threat intelligence learned at that scale is applied to every customer in real time.

Any organization running web services faces constant threats: DDoS attacks, web exploits, malicious bots, and sudden traffic spikes. Appliance-based defenses hit hard limits when attacks exceed link capacity, and stitching together point solutions drives up cost and operational complexity. Cloudflare unifies unmetered DDoS protection, WAF, bot management, CDN, and load balancing on a single platform — deployable in minutes by redirecting traffic, and working regardless of where your origin servers live (on-premises or any cloud).

Cloudflare also delivers an AI platform on the same edge network: Workers AI runs serverless AI inference on GPUs across global PoPs, Vectorize provides a vector database for RAG applications, AI Gateway manages the cost and reliability of external LLM API usage, and Firewall for AI and AI Crawl Control protect LLM applications from prompt injection and give content owners control over AI training crawlers — covering how you build, operate, and protect AI services.

As a Cloudflare partner, Expernet supports Korean enterprises through the full lifecycle — environment assessment, zone design, WAF policy tuning, cache strategy, and operational handover. With proven experience migrating from legacy CDN and security appliances, we help you adopt Cloudflare with zero service disruption.

Key Features

Unmetered DDoS Protection

Automatic mitigation across L3/4/7, absorbed by the full capacity of the anycast network — no usage penalties, no caps.

Web Application Firewall (WAF)

Auto-updated managed rulesets for OWASP and zero-day threats, plus custom rules and rate limiting for apps and APIs.

Bot Management

Machine-learning detection blocks credential stuffing, scraping, and inventory-hoarding bots while allowing good bots.

CDN & Caching

Edge caching, image optimization, and Argo Smart Routing improve response times while cutting origin load.

Global Load Balancing

Health-check-based traffic steering and automatic failover for high availability across multi-origin and multi-cloud environments.

Developer Platform (Workers & R2)

Run serverless code at the edge with Workers and store objects with zero egress fees on R2.

AI Inference & RAG (Workers AI · Vectorize)

Serverless AI inference on edge GPUs — no GPU infrastructure required — with Vectorize and AI Search for RAG pipelines.

AI Operations & Protection (AI Gateway · Firewall for AI)

Cache LLM API calls, observe costs, and fail over between models — while blocking prompt injection and controlling AI crawlers.

Solution Architecture

Cloudflare architectureCloudflare reference configuration
Users
Global users · bots · attack traffic
Anycast-routed to the nearest edge PoP
Edge Security
DDoS mitigation → WAF → Bot management → Rate limiting
Malicious traffic blocked at the edge
Edge Performance
CDN caching · Argo Smart Routing · Workers
Legitimate traffic accelerated and optimized
Load Balancing
Global load balancing · health checks · failover
Traffic steered by origin health
Origin
On-premises · IDC · multi-cloud origins
Origin IPs hidden from direct attacks

Use Cases

E-Commerce / Online Services

Zero Downtime Through Peak Promotions and DDoS Attacks

Challenge Challenge

Promotional traffic surges coincided with competitive DDoS attacks, causing repeated outages; appliance-based defenses were capped by link capacity.

Solution Solution

Redirected traffic through Cloudflare to apply CDN caching, automatic DDoS mitigation, WAF, and bot management in one step, with origin IPs hidden.

Outcome Outcome

Zero outages during promotion periods · 60% less origin traffic · 45% faster page response times.

Frequently Asked Questions

5 items
Traditional CDNs focus on content acceleration, and WAF appliances protect a single network segment — each operated separately. Cloudflare handles CDN, DDoS protection, WAF, and bot management on one edge network, so there is no integration overhead, and defense scales with the entire network rather than an appliance or link capacity. You can also run it alongside existing equipment and migrate in stages.
No. Your origin servers stay wherever they are — on-premises, IDC, or any cloud. Simply redirecting your domain traffic routes it through the Cloudflare edge. Deployment typically completes within minutes to hours with no service interruption, and proxying can be enabled per domain for staged rollouts.
No. Cloudflare provides unmetered DDoS protection on every plan — no overage fees or termination penalties based on attack size or duration, so costs stay predictable even under sustained large-scale attacks.
Yes. Cloudflare operates PoPs in Seoul and other major cities in and around Korea, so domestic users are served from a nearby edge. For services with global audiences, the 330+ city network delivers even greater gains. Expernet can benchmark real-world response times before you commit.
Yes. Workers AI runs open models (Llama, Mistral, Whisper, and more) at the edge without any GPU infrastructure, and Vectorize with AI Search powers RAG-based search and chatbots. If you already use external LLM APIs such as OpenAI or Anthropic, AI Gateway sits in front to cut costs through response caching and to fail over between models automatically, while Firewall for AI blocks prompt injection and other LLM-targeted attacks. Content owners can also use AI Crawl Control to block or monetize AI training crawlers.

Deploy Cloudflare with Expernet

From technical evaluation to deployment and operations — we support the entire lifecycle.

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