CDNsun

What Is CDNsun?

Picture the scenario: a small software company in Warsaw ships a desktop application update. The update is 800 MB, the user base is 40,000, and the release goes live on a Tuesday morning. Without a CDN, the origin server gets hammered simultaneously by tens of thousands of update checks. With the wrong CDN, the company signs an annual contract for bandwidth they only need twice a year.

CDNsun was built for that company. The Prague-based content delivery network charges per gigabyte of data delivered with no monthly minimum — in months with low delivery, the bill approaches zero. Founded in 2012 and operated by CDNsun s.r.o. (Czech Trade Register, IČO 05745314) as a bootstrapped independent for 14 years, CDNsun has built its business on the segment of CDN customers that enterprise contracts do not serve well: seasonally variable workloads, media launches, software distribution, and cost-conscious European businesses that want CDN access without a hyperscaler account.

The network spans 150+ global points of presence. Customers select exactly which PoPs to activate per zone, so a European company serving only European users deploys a European-only configuration and pays European-only rates. There is no forcing of global bundles to access competitive pricing.

Key Features

Pure Pay-As-You-Go Pricing

CDNsun's commercial model is the most prominent feature. There is no monthly minimum, no base subscription, and no overage penalty structure: the price is $0.030 per GB in Europe and North America, $0.060 per GB in APAC, South America, and Africa. Unlimited requests are included at those data rates — no per-request charge stacks on top.

The practical consequence is that a site delivering 100 GB in January and 2 TB in February during a product launch pays proportionally for each month. Neither month requires a contract renegotiation. Compare this to Fastly, where committed use pricing requires volume guarantees, or CloudFront, where pricing transparency requires navigating AWS's pricing calculator across a dozen regional rate cards.

This model serves developers, agencies, and mid-market companies well. It does not serve very high-volume, consistent-delivery workloads as cheaply as a negotiated enterprise contract with Akamai or Fastly. That is an honest trade-off, not a deficiency.

PoP Selection Control

When creating a CDN zone, CDNsun customers choose exactly which points of presence to activate. A European SaaS startup serving French, German, Polish, and Swedish customers can activate only the relevant European PoPs and pay rates only for data delivered through those nodes. Extending to North America for a product launch means adding PoPs, not renegotiating the contract.

This granularity matters for GDPR-conscious deployments. Restricting delivery to EU PoPs keeps cached content physically within Europe, which satisfies the data residency requirements of regulated workloads without needing a custom enterprise arrangement.

Website and Asset Acceleration

Standard static asset CDN delivery — HTML, CSS, JavaScript, images, fonts — is the baseline use case, covering the majority of CDNsun's 2,000+ customer base. Configuration follows the standard push/pull zone model: customers either push files to CDNsun storage or configure an origin server from which CDNsun pulls on cache miss.

Free SSL certificate provisioning is included. DDoS protection at the CDN layer ships as standard. These are often add-on products at larger providers; CDNsun includes them in the per-GB rate.

Video Streaming

CDNsun supports both live and on-demand video streaming at the same per-GB rate as static delivery. There is no streaming surcharge or separate video product SKU. HTTP progressive download and adaptive streaming protocols are documented and supported.

For independent media companies, broadcasters, or training platforms distributing video primarily in Europe, this positions CDNsun as a cost-competitive alternative to purpose-built video CDNs — provided the required PoPs are within the supported network. The absence of a dedicated video CDN management dashboard (like those offered by Bunny.net) is a trade-off: CDNsun is cheaper, Bunny.net provides a more purpose-built video streaming toolkit.

CMS Integrations

Documented integration guides exist for WordPress, Joomla, Drupal, Magento, PrestaShop, OpenCart, and X-Cart. These are configuration tutorials rather than official plugins, but they reduce the setup time for CMS-based deployments to under an hour for an experienced developer. A REST API handles programmatic zone management and automation.

Pricing

CDNsun's pricing is a single usage-based tier at $0.030 per GB for Europe and North America and $0.060 per GB for APAC, South America, and Africa. There is no monthly minimum. Unlimited requests and raw logs are included at those rates. SSL and DDoS protection are standard.

For volume context: 1 TB of European delivery costs $30.00. 10 TB costs $300.00. A software company distributing 5 TB of update packages to European users across a month pays $150.00 — with no subscription, no commitment, and the ability to scale down to near-zero the following month.

Enterprise pricing is available for very high-volume contracts and includes volume discounts, a negotiated SLA, and dedicated account management.

The 15-day free trial with no credit card required provides a realistic evaluation window — sufficient to test actual throughput and latency across target PoPs under real load.

Compared to the three direct alternatives listed: Fastly starts competitively but requires traffic commitments for the best rates. Amazon CloudFront's $0.085 per GB in Europe is materially higher than CDNsun's $0.030. Akamai is enterprise-tier pricing negotiation by default. Among European-origin alternatives, CDN77 and Bunny.net compete directly on price; Bunny.net in particular matches or undercuts CDNsun on per-GB rates while offering more product breadth.

EU Compliance & Privacy

CDNsun s.r.o. is incorporated in the Czech Republic, an EU member state, placing it under GDPR jurisdiction. A Data Processing Agreement is available. Customers restricting zones to EU PoPs keep all cached content physically within the European Union.

The compliance posture is clean for a CDN: the company is EU-registered, the data is cached at customer-selected European nodes, and there is no US parent introducing Cloud Act exposure. For regulated workloads, the combination of EU-only PoP selection and an executed DPA satisfies standard GDPR CDN procurement checklists.

There is no ISO 27001 or SOC 2 certification publicly documented — a limitation worth noting for enterprise procurement that requires certified security controls. CDN77 and Bunny.net have made more public progress on formal certification.

Who It's Best For

If you deliver variable workloads — software updates, media releases, seasonal traffic spikes — and want to pay only for what you actually deliver each month, CDNsun's no-minimum PAYG model is purpose-built for this pattern.

If you are a European company serving primarily European users and want to restrict CDN delivery to EU PoPs without enterprise negotiation, PoP selection control makes this a simple configuration rather than a procurement exercise.

If you need a low-commitment entry point to global CDN delivery — test a product launch, distribute a software package — the 15-day free trial and zero-minimum PAYG allow genuine evaluation before any financial commitment.

If you need edge computing, managed WAF, advanced bot management, or the feature richness of a Cloudflare or Fastly Enterprise account, CDNsun does not offer these capabilities. Bunny.net is the European alternative with the broadest feature set at the independent CDN scale.

If you need a formal SLA or certified security documentation as a procurement requirement, CDNsun's small team limits what it can provide — this is where larger European providers have an advantage.

The Verdict

CDNsun has operated as an independent Czech CDN provider for 14 years without venture capital, without acquisitions, and without a pivot to cloud computing. That track record of focused, sustainable operation in a competitive market is worth something. The pay-as-you-go model solves a real problem for the segment of CDN customers that enterprise contracts either over-price or over-commit.

The honest limitation is scale: fewer than 10 employees means slower development, limited certification investment, and narrower feature surface than Bunny.net or CDN77, the two European competitors that have grown most aggressively in recent years. CDNsun wins on PAYG pricing transparency and PoP control; it loses on feature breadth and the kind of enterprise documentation that larger organisations require. For small to mid-market European teams with variable delivery patterns and no appetite for subscription commitments, it is a straightforward and honest choice.

Frequently Asked Questions

How does CDNsun's pay-as-you-go pricing work?

CDNsun charges per gigabyte of data delivered with no monthly minimum. The rate is $0.030 per GB in Europe and North America and $0.060 per GB in APAC, South America, and Africa. Unlimited requests and raw logs are included. In a month where you deliver nothing, you pay nothing — there is no base fee or idle charge.

How many PoPs does CDNsun operate and where?

CDNsun operates 150+ points of presence globally. Customers choose exactly which PoPs to activate when creating a delivery zone, allowing European-only deployments or targeted regional configurations. Activating only the regions where your users actually are reduces cost and keeps data within chosen jurisdictions.

How does CDNsun compare to Bunny.net and CDN77?

All three are independent European CDN providers competing on value. Bunny.net offers the broadest feature set — edge scripting, video streaming with a dedicated dashboard, and object storage — at comparable per-GB rates. CDN77 targets high-volume video delivery with premium peering. CDNsun is the smallest of the three and the most narrowly focused on core CDN delivery with maximum PAYG pricing transparency. For variable workloads and cost control, CDNsun holds up. For feature richness, Bunny.net is the stronger choice.

Does CDNsun support video streaming?

Yes. CDNsun supports both live and on-demand video streaming at the same $0.030 per GB rate as static delivery — no streaming surcharge. HTTP progressive download and adaptive streaming protocols are supported. There is no dedicated video CDN management dashboard, so teams with complex streaming workflows may prefer Bunny.net's video-specific tooling.

Is CDNsun suitable for GDPR-compliant deployments?

CDNsun s.r.o. is incorporated in the Czech Republic, an EU member state, under GDPR jurisdiction. A Data Processing Agreement is available. Customers can restrict delivery zones to EU-only PoPs, keeping cached content physically within the European Union. This combination satisfies the standard GDPR CDN compliance requirements for European enterprise procurement.