Cloudflare is a global connectivity and cloud services platform that provides website security, content delivery, networking, developer infrastructure, and application services. Businesses can use Cloudflare to protect websites from attacks, accelerate content delivery, manage DNS, connect users to applications, and deploy code and data services closer to end users.
The platform combines security and performance services on a global network spanning more than 335 cities. Cloudflare describes its network as operating close to users, applications, and data, allowing organizations to use the same infrastructure for website delivery, application security, connectivity, and cloud workloads.
Cloudflare's offerings range from a free plan for personal and hobby projects to paid plans for professional websites, small businesses, and enterprise environments. Additional products such as Workers, R2, Zero Trust, Load Balancing, and Stream can be added according to an organization's requirements.
What Is Cloudflare?
Cloudflare originally became widely known for its content delivery network (CDN), DNS, SSL, and DDoS protection services. Its platform has expanded into a broader collection of application security, networking, developer, storage, and Zero Trust products.
Cloudflare sits between users and an organization's applications or websites in many configurations. Requests can be routed through Cloudflare's network, where security rules can inspect traffic and caching can serve eligible content closer to visitors.
Its application-services portfolio includes Layer 7 DDoS protection, Web Application Firewall, API security, bot management, CDN, DNS, smart routing, and load balancing.
Content Delivery and Website Performance
Cloudflare's CDN distributes cached website content through its global network. Static resources such as images, stylesheets, and JavaScript files can be served from locations closer to visitors rather than repeatedly retrieved from an origin server.
"Cloudflare states that its network has more than 335 cities and places cached static content within 50 milliseconds of 95% of Internet users."
Businesses can also use caching rules, image optimization, smart routing, and load balancing to improve website performance and availability.
Argo Smart Routing uses Cloudflare's network intelligence to route dynamic traffic across available paths. Load Balancing distributes requests between healthy origin servers and can provide failover when a server becomes unavailable.
DNS and SSL
Cloudflare provides authoritative DNS services for managing domain records and directing traffic to websites and applications.
Its Universal SSL service can provide HTTPS encryption for supported websites, while organizations with more complex certificate requirements can use products such as Advanced Certificate Manager.
DNS and SSL are closely integrated with Cloudflare's other network services, allowing businesses to manage core website infrastructure from the same platform.
DDoS Protection
Distributed denial-of-service attacks attempt to overwhelm websites or applications with large volumes of malicious traffic.
"Cloudflare provides unmetered DDoS protection across its primary website plans." Its network can identify and mitigate different types of DDoS traffic before requests reach the protected origin infrastructure.
For businesses operating revenue-generating websites or public applications, DDoS protection can form part of a broader availability and security strategy.
Web Application Firewall
The Cloudflare Web Application Firewall (WAF) is designed to protect web applications from malicious requests and common application-layer attacks.
Cloudflare's security portfolio includes managed rules, customizable WAF rules, bot controls, and protections against threats such as SQL injection. The Pro plan adds additional WAF and bot-management controls compared with the Free offering.
Organizations can use WAF policies to block, challenge, or otherwise manage traffic based on characteristics of incoming requests.
Bot and API Security
Automated traffic can include both legitimate bots and malicious automation. Cloudflare provides bot-management capabilities intended to distinguish and control different categories of automated traffic.
Cloudflare also provides API security features for organizations whose applications depend heavily on APIs. These capabilities can help businesses identify API endpoints, monitor traffic, and apply security policies.
Together, bot and API controls can complement the traditional firewall and DDoS protection layers.
Cloudflare Workers
Cloudflare Workers is a serverless application platform that allows developers to execute code on Cloudflare's network rather than relying exclusively on traditional application servers.
Workers supports languages and runtimes including JavaScript and other supported development environments. Developers can use it for APIs, edge logic, request processing, automation, web applications, and other workloads.
"The current Workers Paid plan starts at $5 per month and includes 10 million requests per month, with additional usage charged according to the applicable usage model."
Cloudflare also provides related services including Durable Objects, Workflows, D1, KV, and other developer-platform components.
Cloudflare R2 Storage
R2 is Cloudflare's object storage service for storing application data, media, backups, and other objects.
R2 uses usage-based pricing for storage and operations. "Standard storage currently costs $0.015 per GB-month, while Infrequent Access storage costs $0.01 per GB-month." Cloudflare does not charge egress bandwidth fees for R2 storage classes.
R2 can therefore be used alongside Workers and other Cloudflare services when developers want storage integrated into an edge-oriented application architecture.
Zero Trust and Cloudflare One
Cloudflare also provides Zero Trust and SASE services for protecting employees, devices, applications, and corporate networks.
Cloudflare One combines security and networking capabilities and can be used to control access to internal applications, protect users from phishing and other threats, enforce policies, and connect organizational locations.
Zero Trust services extend Cloudflare's role beyond public websites into workforce security and enterprise connectivity.
Media and Application Services
Cloudflare provides additional services for organizations with specialized workloads.
Stream supports video storage, encoding, and delivery for live and on-demand video. Images provides image storage and optimization capabilities, while Load Balancing can distribute traffic between origin infrastructure.
Cloudflare also offers services such as Log Explorer, Cache Reserve, Advanced Certificate Manager, and client-side security.
Cloudflare Pricing
Cloudflare's primary website plans currently include:
- Free: $0 per month
- Pro: $20/month when billed annually or $25/month monthly
- Business: $200/month when billed annually or $250/month monthly
- Enterprise: Custom pricing
The plans include core services such as DNS, CDN, SSL, and unmetered DDoS protection, while higher tiers provide additional security, performance, support, and administrative features.
Additional Cloudflare products can have separate usage-based or subscription pricing. For example, Workers Paid starts at $5 per month, while R2 charges based on storage and operations.
How Businesses Evaluate Cloudflare
Organizations generally consider:
- Website traffic and geographic audience
- DDoS and application-security requirements
- CDN and caching needs
- API and bot protection
- Origin-server architecture
- Developer workloads
- Object-storage requirements
- Employee and application access
- Load-balancing requirements
- Logging and monitoring
- Expected usage-based costs
A small website may primarily require DNS, CDN, SSL, and basic security, while larger organizations may combine Cloudflare's application security, Zero Trust, developer, storage, and networking services.
Final Thoughts
Cloudflare has developed from a website-performance and security provider into a broader cloud and connectivity platform. Its services cover CDN, DNS, DDoS protection, WAF, bot management, API security, Zero Trust, serverless computing, object storage, load balancing, and media delivery.
Businesses can begin with core website services and add products such as Workers, R2, Zero Trust, or advanced security controls as their technical requirements expand. Evaluating traffic patterns, application architecture, security needs, and usage-based services can help organizations determine which parts of the Cloudflare platform are relevant to their operations.
References
- Cloudflare — Plans and Pricing
- Cloudflare — Application Services for Security and Performance
- Cloudflare — Website Optimization
- Cloudflare — Pro Plan Overview
- Cloudflare — Zero Trust and SASE Plans
- Cloudflare Developers — Workers Pricing
- Cloudflare Developers — R2 Pricing
- Cloudflare — Cloudflare Platform