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How do e-commerce and online shops benefit from using a modern CDN?

  • By Gcore
  • February 7, 2023
  • 7 min read
How do e-commerce and online shops benefit from using a modern CDN?

Competition in the e-commerce industry is growing rapidly. To run an online business successfully, you need to be sure that your online platform is fast, stable, and responsive for every user around the globe. Because even a small disruption in service could cost you not only profit but lead to a loss of loyalty and long-term reputational damage.

This is a big challenge for your infrastructure team, and one they’ll need to oversee daily. Your engineers must design and maintain a massive bunch of on-premise or cloud services stitched together for a single purpose—efficient operation of the e-commerce platform.

In this article, we’ll reveal what a modern CDN is, the important part it plays in an e-commerce platform, and how you could benefit from using this cloud service.

What is a CDN?  
How, exactly, does a CDN accelerate websites?  
Additional advantages CDNs bring to the e-commerce industry  
Measurable benefits for online stores and marketplaces  
CDN as a cloud service  
How to choose the best CDN for e-commerce

What is a CDN?

A content delivery network or CDN is a distributed network of caching servers dedicated to storing a copy of your website closer to your audience of end users.

The conventional understanding of a CDN’s purpose is accelerating websites and web applications by delivering cached static content via geographically dispersed server locations. It means every time your user from Boston sends requests to the website hosted in Berlin, the answer will be delivered from the closest point—for example, a server located in New York.

A CDN works as a proxy between your web server and clients—your user connections are terminated at geographically distributed edge (in relation to the network) servers, and only then, if needed, could they reach the origin server.

Read more detailed information about CDN

How, exactly, does a CDN accelerate websites?

Let’s dig a bit deeper into how it works.

The web page loading speed is determined by how quickly the web server can receive the client’s request, process it, and deliver the answer. It depends on web server configuration, website code, third-party scripts, and many other factors. There are many things to optimize on the client and server side, but if you operate globally, one of the most important challenges for you is the distance.

Since every website consists of many different files (like HTML, CSS, JS, and JPG), the webpage loading involves multiple request-answer trips between your browser and the web server, which should travel all the distance between their locations.

Figure 1. How a CDN accelerates static content delivery

Decreasing this distance evidently reduces the overall time needed for page rendering. So, with a properly-configured CDN service, your users will reach your website as if the web hosting is always located in the same region of the globe as they are.

Today, web acceleration is becoming even more tricky. Cloud-native applications with microservice architecture, deeply personalized customer feeds, constant split testing, and many other things that rely on dynamic content delivery are making things more complex. This is the reason why some CDNs are transforming into edge optimization platforms with dynamic content acceleration (DCA) capabilities.

Additional advantages CDNs bring to the e-commerce industry

E-commerce today is not just about having a website and optimization; it’s much more. Running an online store, managing a marketplace, or hosting a classified ads service, you need to make sure that your audience can entrust you with their sensitive data like payment details and user credentials.

Here are some functions beyond web acceleration modern CDNs need to accomplish to meet the demands of the e-commerce industry.

Ensure uptime and minimum service disruption

Aside from web acceleration, a CDN also protects the web server from being overwhelmed during significant spikes in web traffic or during distributed denial of service (DDoS) attacks. Otherwise, these events could cause significant problems like server slowdowns or even crashes.

The ability to handle traffic spikes is very helpful for online retailers during seasonal sales or desirable promo events.

Figure 2. The previously announced PS5 online sale caused a 30% burst in traffic for the online retailer.

Preventing outages due to large-scale DDoS attacks is an inherent feature of many CDN with high global network capacity. It could protect your web service from disruptions and prevent all related profit loss from occurring.

Deliver lightweight product images with ease

Flawless product images are crucial for any e-commerce project, no matter if you are running a small clothing store or a large nationwide retailer. Your buyers should be able to zoom in and inspect every detail of the goods you’re offering. And be able to do so without compromising website responsiveness at the same time.

To achieve this balance between hi-res pictures and their loading speed, you need to perform a very subtle code configuration as well as use efficient image compression and delivery techniques.

That’s where image optimization on CDN (sometimes called “Image CDN”) comes into play.

Figure 3. Image cropping with image optimization on CDN

This image optimization functionality allows you to:

  • Significantly reduce image size by applying compression or converting original images into more optimized formats like WebP or AVIF;
  • Eliminate all pre-uploading routines for your team regarding editing, resizing, and quality optimization, freeing up precious designer resources;
  • Become more agile and flexible with planning and implementing website changes and testing because you’ll be able to apply bulk changes with a simple URL query string.

Read more about image optimization use cases

Instant playback of e-commerce video

Brand videos, product explainers, how-to videos, product look-ups, catwalk clips for clothing previews, and customer video reviews—all these use cases are very important for commercial efficiency in today’s video internet era.

Up to 80%  
increased conversion when using video on landing pages  

Source: saleslion.io
1.81×  
increase in the likelihood of purchasing for those who view video  

Source: adobe.com
Almost 50%  
of internet users look for a video related to a product before visiting a store  

Source: thinkwithgoogle.com

Online shops should be able to host tons of video assets and stream them efficiently via the internet with zero delays. Employing a CDN is the only way to make it possible on a global scale.

Optimized for video-on-demand (VOD) delivery, a CDN service can minimize the time-to-first-byte metrics and provide your audience with the best possible user experience.

Secured operations and payment processing

The e-commerce industry is inherently connected with user credentials, personal data, and payment processing. Regardless of the architecture of your service, you need to treat all kinds of sensitive data very carefully, factoring in all possible security options. Because you don’t get repeated chances to fail and stay valid or considered legitimate in this field.

Modern CDNs work as a full-fledged edge optimization platform designed to create a secure environment for your clients and customers.

With SSL/TLS encryption, you will have the risk-free transactions you need to ensure customer loyalty. A Web Application Firewall (WAF) tool helps prevent unauthorized access and removes vulnerabilities at the application layer.

Measurable benefits for online stores and marketplaces

As we’ve discovered, a CDN could make your web service more reliable, fast, and secure. Which leads us to the following question: what exact benefits could it deliver to your business?

The main benefit your online business could obtain from having a well-optimized website is an improved user experience. It will appropriately affect overall customer satisfaction and long-term loyalty. But all these benefits are hard to assess, so let’s break them down into smaller, more measurable metrics we should keep an eye on.

Decreased bounce rate and longer session duration

Bounce rate and average session duration are the two main metrics of your website (usually tracked in Google Analytics) that are used to show the quality of user behavior.

And both of them are very sensitive to page speed improvements:

  • 20% reduction in page load time leads to 9% decrease in bounce rate (Source: thinkwithgoogle.com)
  • 55% page load time improvement (LCP metric) delivers 23% better session duration (Source: web.dev)

Improved conversion rate

As well as behavior metrics, the website conversion rate could also be impacted by changes in website speed. Since this parameter is very comprehensive, it’s difficult to distill the only reason for its improvement. That being said, in many cases, we can see how it correlates with the time of page loading.

  • A 0.1-second page load time improvement increases mobile conversion rate by 8-10% (Source: thinkwithgoogle.com)

Increased revenue per session

Sometimes, large e-commerce platforms conduct research on how web performance optimization could increase their revenue per user session. For example, here’s how much online fashion brand Zalando improved their stats:

  • 0.7% increased revenue per session with a 100ms page load time improvement (Source: web.dev)

Higher search ranking and better SEO

Search engine optimization (SEO) efforts may seem very unclear when looking in from the outside, but they entail specific and measurable parameters you can monitor with tools like Google Search Console or SEMrush. All things being equal, increasing the webpage loading speed will affect its search ranking results.

  • A 40% improvement in LCP led to 28% more organic traffic (Source: web.dev)
  • Top-ranked websites have faster site speeds for page load time-to-first-byte (Source: neilpatel.com)

Free Whitepaper!

The CDN impact on SEO: how speeding up your website can promote your business online.

Download now

CDN as a cloud service

One more measurable benefit, which we didn’t mention in the list above, is your company’s decreasing amount of required investment and total costs of ownership (TCO). With a CDN, your business won’t need to buy and maintain expensive on-premise appliances needed for DDoS mitigation and correlated bandwidth issues.

This benefit originates from the cloud nature of the CDN service. It means you don’t need to own a large-scale infrastructure with complicated software and thousands of server nodes in dozens of locations worldwide.

You could just easily hire the service when needed and pay as you go.

It gives you greater scalability benefits to increase the agility and flexibility of your product growth and go-to-market strategy.

How to choose the best CDN for e-commerce

Here is a brief checklist that will help you navigate through the main points of acquiring a CDN service.

1. Price and coverage

The price and coverage (read: performance) are the most popular things people ask at first. Both of them could significantly vary from region to region depending on the number of locations, network connectivity, and existing internet conditions.

In this question, your decision should be determined by your knowledge of your audience and the market strategy. As an option, you could choose a multi-CDN strategy with many CDN providers at once.

2. Anti-DDoS and security

At the second step, check the DDoS mitigation capabilities and the list of security options. Modern CDN providers should have built-in security mechanisms like WAF, traffic filtering, bot management, SSL/TLS encryption, etc.

It all depends on your existing security strategy, but it could be a good all-in-one option in some cases.

3. Content optimization and delivery

As mentioned above, e-commerce web platforms strongly depend on static asset delivery, so ask about Brotli/Gzip compression for files and fonts, WebP/AVIF conversion for images, and abilities to crop/resize and change image quality.

All these features should be performed on-the-fly, without affecting your web server configuration and file directories.

4. Dynamic content acceleration

A new age brings with it new challenges. A cloud-native environment with intensive service-to-service communication and deeply personalized user experience demands the acceleration of dynamically generated assets and API calls. For many CDNs, it is a real challenge, because the dynamic content cannot be cached conventionally.

So check the capabilities of your CDN provider on accelerating dynamic content and how they could be adapted for your existing needs.


Gcore CDN is a next-gen content delivery network optimized for dynamic content delivery, video streaming, and image processing. It runs over the global edge infrastructure with more than 140 locations worldwide.

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As AI is at the forefront of our products and services, we also provided insights into how regulations are changing worldwide and how AI will likely affect all aspects of digital experiences. We already have many new AI developments in the pipeline for 2025, so watch this space…4. Global expansionsWe had some exciting expansions in terms of new cloud capabilities. We expanded our Edge Cloud offerings in new locations, including Vietnam and South Korea, and in Finland, we boosted our Edge AI capabilities with a new AI cluster and two cutting-edge GPUs. Our AI expansion was further bolstered when we introduced the H200 and GB200 in Luxembourg. We also added new PoPs worldwide in locations such as Munich, Riyadh, and Casablanca, demonstrating our dedication to providing reliable and fast content delivery globally.5. FastEdge launchWe kicked off the year with the launch of FastEdge. This lightweight edge computing solution runs on our global Edge Network and delivers exceptional performance for serverless apps and scripts. This new solution makes handling dynamic content even faster and smoother. We ran an AI image recognition model on FastEdge in an innovative experiment. The Gcore team volunteered their pets to test FastEdge’s performance. Check out the white paper and discover our pets and our technological edge.6. PartnershipsWe formed some exciting global partnerships in 2024. In November, we launched a joint venture with Ezditek, an innovator in data center and digital infrastructure services in Saudi Arabia. The joint venture will build, train, and deploy generative AI solutions locally and globally. We also established some important strategic partnerships. Together with Sesterce, a leading European provider of AI infrastructure, we can help more businesses meet the rising challenges of scaling from AI pilot projects to full-scale implementation. We also partnered with LetzAI, a Luxembourg-based AI startup, to accelerate its mission of developing one of the world’s most comprehensive generative AI platforms.7. EventsIt wasn’t all online. We also ventured out into the real world, making new connections at global technology events, including the WAICF AI conference and Viva Tech in Cannes and Paris, respectively; Mobile World Congress in Barcelona; Gamescom in Cologne in August; IBC (the International Broadcasting Convention) in Amsterdam; and Connected World KSA in Saudi Arabia just last month. We look forward to meeting even more of you next year. Here are a few snapshots from 2024.GamescomIBC8. New container registry solutionSeptember kicked off with the beta launch of Gcore Container Registry, one of the backbones of our cloud offering. It streamlines your image storage and management, keeping your applications running smoothly and consistently across various environments.9. GigaOm recognitionBeing recognized by outside influences is always a moment to remember. In August, we were thrilled to receive recognition from tech analyst GigaOm, which noted Gcore as an outperformer in its field. The prestigious accolade highlights Gcore as a leader in platform capability, innovation, and market impact, as assessed by GigaOm’s rigorous criteria.10. New customer success storiesWe were delighted to share some of the work we’ve done for our customers this year: gaming company Fawkes Games and Austrian sports broadcaster and streaming platform fan.at, helping them with mitigating DDoS attacks and providing the infrastructure for their sports technology offering respectively.And as a bonus number 11, if you’re looking for something to read in the new year lull, download our informative long reads on topics including selecting a modern content delivery network, cyber attack trends, and using Kubernetes to enhance AI. Download the ebook of your choice below.The essential guide to selecting a modern CDN eBookGcore Radar: DDoS attack trends in Q1-Q2 2024 reportAccelerating AI with KubernetesHere’s to 2025!And that’s it for our 2024 highlights. It’s been a truly remarkable year, and we thank you for being a part of it. We’ll leave you with some words from our CEO and see you in 2025.2024 has been a year of highs, from our tenth anniversary celebrations to the launch of various new products, and from expansion into new markets to connecting with customers (new and old) at events worldwide. Happy New Year to all our readers who are celebrating, and see you for an even bigger and better 2025!Andre Reitenbach, CEOChat with us about your 2025 needs

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