Ecommerce Performance Optimization Best Practices

Shalom Carmel Chief Information Officer at GlobalDots
5 Min read

As the internet becomes more complex, many services that have traditionally only been available offline can now be accessed via the web. One such activity is online shopping and other financial based activities. The popularity of online shopping has been increasing steadily in recent years, with many users opting to buy over the internet instead of heading to their local high street.

While this provides consumers with greater choice and flexibility, it also comes with some costs, most notably security and performance issues. As the growth of ecommerce and online shopping shows no signs of abating, businesses must find ways to keep up with this demand.

Book a demo today to see GlobalDots is action.

Optimize cloud costs, control spend, and automate for deeper insights and efficiency.

Book a demo today to see GlobalDots is action.

In this article we’ll discuss ecommerce performance optimization practices, with focus on the technical aspects.

An illustration depicting online shopping with a laptop and smartphone,both showing shopping cart icons and awnings.

Ecommerce performance optimization

Optimizing ecommerce performance is a complex subject, with many different approaches and strategies focusing on specific areas (for example rewriting product page copy or optimizing time to first byte).

However, all these optimization strategies have a common goal to increase conversion rates (and bring in more revenue).

Conversion rates are always almost the same (2-3%) across most of the eCommerce sites below top 1000. Experts suggest that low conversion in general is due to the complexity of converting a viewer to a customer. Recent trends show that it’s getting harder to improve the conversion rates due to the situation of the web industry, given all the complexities of conversion decision, funnels, buyers stage, infrastructure and so on.

Here are some facts:

  • 47% of people expect a web page to load in two seconds or less
  • 40% will abandon a web page if it takes more than three seconds to load
  • 52% of online shoppers claim that quick page loads are important for their loyalty to a site
  • 14% will start shopping at a different site if page loads are slow
  • 23% will stop shopping or even walk away from their computer
  • 64% of shoppers who are dissatisfied with their site visit will go somewhere else to shop next time
Infographic on customer expectations regarding website load times.
Image Source

Modern website acceleration, monitoring and security technology exists to solve many of the issues faced by online stores and they provide several benefits:

  1. Improved performance allows several people to browse stores and make purchases at once without slowdown.
  2. Dynamic website acceleration allows for the fast delivery of constantly changing content such as stock levels and new product information.
  3. Shopping cart acceleration ensures that customers aren’t left waiting at the final hurdle. With many users abandoning shopping carts if loads times are too slow, this can help boost sales and limit lost opportunities.
  4. Streaming technologies can be used to provide rich advertising and promotional media to website visitors.
  5. Stores, warehouses and head offices can be connected via high speed networks to ensure that all stock levels are kept up to date and new product information can be disseminated quickly.
  6. Analytics information can be used to inform future product decisions.

Leverage a content delivery network (CDN)

A Content Delivery Network (CDN) is a globally distributed network of web servers whose purpose is to provide faster delivery, and highly available content. The content is replicated throughout the CDN so it exists in many places all at once. A client accesses a copy of the data near to the client, as opposed to all clients accessing the same central server, in order to avoid bottlenecks near that server.

To put it more simply, the purpose of a CDN is to improve user experience and provide it with a more efficient network resource utilization. Content providers such as media companies and e-commerce vendors pay CDN operators to deliver their content to their end-users.

Given the increasingly international nature of ecommerce, leveraging a CDN — or multi-CDNs — is a non-negotiable ingredient your platform should provide and optimize regularly.

Cache often

Caching is a mechanism for the temporary storage of web pages in order to reduce bandwidth and improve performance. When a visitor arrives at your website the cached version will be served up unless it has changed since the last cache. This saves server time and makes things altogether faster.

Mobile pages especially rely on a lot of redirects from one URL to another, replacing “www” with “m.” To avoid getting bogged down and speed up the page load time, caching will be your best friend. But also keep in mind that caching storage on mobile devices is much less than on desktops, so ultimately it’s best to keep redirects to a minimum and serve up pages to the user directly.

Optimize for mobile

One eCommerce channel you can’t afford to ignore is mobile. That’s because more people use mobile devices than desktops. It’s also a key channel for researching products and services.

  • Speed up your site. Mobile users have limited patience. If your site takes more than 3 seconds to load, 40% of mobile users will leave.
  • Use Videos. According to data, 90% of consumers watch videos on mobile devices. Even more important, 84% of consumers have made a purchase after watching a video.
  • Optimize For Mobile Search. Mobile SEO is an important part of winning conversions. With Google’s mobile-first index a reality, you can’t ignore this if you want mobile users to find your content
Graph showing worldwide internet usage trends from October 2009 to October 2016.
Image Source

Reduce image size

Images take up 60% of an average storefront page, JPEGs take longer to respond than other content types (except flash) and they are still making a majority of requests for image type, followed by PNGs andGIFs.

Once you have reduced the file sizes of your images, you need to strategize your image dimensions and product angles, especially if you are using extra images to display different shots of a single product. You should also, where possible, make available a smaller image that can be viewed in a larger pop up scale. Do not put the largest image on your landing page. You should also use thumbnails and image sitemaps, but not without being careful.

Basic optimization includes cropping unnecessary space, reducing color depth to the lowest acceptable level, removing image comments, and saving the image to an appropriate format. This can be done with almost any image editing program. Advanced optimization involves further (lossless) compression of JPEG and PNG files. On WordPress, you can use WP Smush.it tool to optimize JPEGs, PNGs and GIFs.

Conclusion

By utilizing acceleration technologies in these ways, ecommerce businesses can ensure that customers have a hassle free experience when purchasing items online. This will reflect well on the brand and encourage customers to visit regularly.

If you have any questions, contact us today to help you out with your performance and security needs.

Latest Articles

The Security Blind Spot: Business Logic Failures and How to Catch Them

Security leaders know the drill: vulnerability scanners run their course, reports stack up, and yet attackers still slip through. What’s going wrong? We sat down with Yosef Yekutiel, CISO & Data Privacy Officer at MaccabiDent, at GlobalDots’ recent “Red Team Reality Check” event to unpack this gap, and how modern offensive security can fill it. […]

Ganesh The Awesome
27th August, 2025
How NetRefer Cut Observability Costs by €96,000 Per Year in Just 3 Months with GlobalDots

Overview NetRefer, a leading iGaming affiliate marketing platform, utilized Azure cloud-native monitoring tools. Shortcomings needed to be resolved, and the business required next-generation observability.  Problems that needed to be solved: Through GlobalDots’ expertise in selecting and implementing the right observability solution, NetRefer achieved €96,000 in annual savings and gained real-time observability across their entire platform […]

Ganesh The Awesome
24th July, 2025
Vulnerability Assessments vs. Penetration Testing: Key Differences, Use Cases & Best Practices

They’re not interchangeable. A vulnerability assessment identifies known flaws at scale. A penetration test mimics an actual attacker probing for impact. Yet many teams treat them the same. They substitute one for the other, check a compliance box, and move on as if they’re covered. They’re not. And that gap shows up later in real-world […]

Ganesh The Awesome
7th July, 2025
Web Application Firewalls (WAFs): The Evolving First Line of Defense in Cloud Security

Modern applications are built for speed, not simplicity. Containers, microservices, and cloud-native deployments have blown up the security perimeter. Traditional tools can’t keep up with this complexity. That’s why Web Application Firewalls (WAFs) matter. But the WAF of 2025 isn’t just an appliance sitting in front of a static website. It’s a flexible, cloud-aware security […]

Ganesh The Awesome
7th July, 2025

Unlock Your Cloud Potential

Schedule a call with our experts. Discover new technology and get recommendations to improve your performance.

    GlobalDots' industry expertise proactively addressed structural inefficiencies that would have otherwise hindered our success. Their laser focus is why I would recommend them as a partner to other companies

    Marco Kaiser
    Marco Kaiser

    CTO

    Legal Services

    GlobalDots has helped us to scale up our innovative capabilities, and in significantly improving our service provided to our clients

    Antonio Ostuni
    Antonio Ostuni

    CIO

    IT Services

    It's common for 3rd parties to work with a limited number of vendors - GlobalDots and its multi-vendor approach is different. Thanks to GlobalDots vendors umbrella, the hybrid-cloud migration was exceedingly smooth

    Motti Shpirer
    Motti Shpirer

    VP of Infrastructure & Technology

    Advertising Services