eCommerce Performance Testing
Keep Your eCommerce Platform Going —
Even at Peak Demand

Trusted By
Your Website Can’t Afford These Risks
Traffic Spikes That Turn Into Lost Sales
Without load testing, even a modest traffic spike can crash your store, freeze carts, and wipe out revenue in minutes.


Checkout That Chokes
If your site slows down when too many users try to check out, they’ll bounce — and they won’t come back. High response times, failed payments, spinning loaders: all avoidable with performance testing.

One Update to Break Them All
A small code change or new plugin can overload your system in ways you didn’t predict. Performance testing ensures every update is safe — before your customers find the bugs for you.

Inventory Sync Goes Off the Rails
When traffic climbs, backend systems like inventory and ERP can fall out of sync. That means customers buy items you don’t have, orders get canceled, and unnecessary strain on your operations — unless your systems are ready for real demand.
Third-Party Tools Can Drag You Down
Most ecommerce setups rely on third-party services: payment providers, shipping APIs, CRM tools. Under pressure, even one weak link can stall the whole experience. Load testing identifies these chokepoints before your customers do.
Global Traffic,
Local Failures
A performance bottleneck in a different region can silently sabotage your international customers. Without geo-based performance testing, you won’t know it’s broken until you’ve already lost the sale.
How to Get Started
In our initial call, we will explore your performance testing requirements and timeline. This stage will also help us determine the most suitable engagement model for you: a standalone testing project or ongoing managed testing services.
At this stage, we will develop a comprehensive strategy to perform performance testing that caters specifically to your needs and technology stack. Additionally, we will assemble a team of experienced performance engineers to execute the plan effectively.
With our strategy determined and the team in place, we will now begin the project. As we move into the performance testing stage, we will provide you with regular updates to track progress and closely monitor important metrics to ensure alignment with your software testing goals.
How Load Testing Pays Off
Scale Without Fear
Performance testing ensures your eCommerce platform handles increasing user loads without slowdowns, errors, or downtime — so your store grows as fast as your marketing plans.
Know Your Breaking Point
By simulating real-world traffic spikes (and worse), we expose vulnerabilities and edge-case failures in a controlled environment — not during your biggest sales of the year.
Stay Fast, Stable, and Always On
Endurance testing helps your eCommerce site stay consistent under prolonged pressure, reducing fatigue, memory leaks, and performance decay that can build over time.
Stop Incidents Before They Happen
Load testing proactively detects points of failure so you can fix them early. That means fewer emergencies and less downtime during high-stakes moments.
Optimize Cloud Spend Without Guesswork
We help you find the sweet spot between performance and cost by right-sizing your infrastructure based on real usage patterns.
Eliminate Bottlenecks That Kill Conversions
We identify and fix the hidden slowdowns — like overloaded APIs, unresponsive elements, or backend lags — that quietly eat away at your sales and customer trust.
What Our Clients Say About Us

We were just days away from launching a new eCommerce website built for high sales — but we weren’t sure it could handle the pressure. PFLB ran a full-scale performance test in four days, helped us boost capacity 30x, and gave us the confidence to go live without risking a crash.

I was highly satisfied working with PFLB. They're a fantastic one-stop shop for software performance, with everything you need—their platform and skilled engineers. I've used them three times to load test the College Board software before big updates, and it all went smoothly. Plus, I love that they store all the testing data, so we can track performance capacity over time.

PFLB did benchmarking tests on our database storage engine under standard and uncommon conditions, using specialized tools. Their analysis gave us valuable insights and recommendations to boost our product's performance. I highly recommend PFLB to anyone looking for an expert performance testing company.

PFLB's testing team helped us successfully complete the FDA regulations with a great test coverage for the computer system validation (CSV) process at Illumina. I highly recommend Yuri Kovalov and his team—they're top-notch professionals in performance and load testing.

It was a pleasure working with PFLB, and I'd recommend them for performance testing. They quickly got up to speed with our complex software architecture and were super productive in setting up our load test environment in the cloud. They were really dedicated to improving our product with their strong expertise in performance optimization.

PFLB was willing to work with a very small solopreneur without an enormous investment in capital. Their prices were reasonable and provided me with notable improvements to my php performance.

We smoothly moved over 30 JMeter projects to PFLB, and it's been a total game changer. It's given our team of 50+ remote performance engineers the ability to handle large-scale load tests every day with real ease.

PFLB has been Tinder's load testing provider for over 5 years, and it is a true pleasure working with them. They managed the entire performance engineering process for our app releases, helping us fix tons of performance issues. I highly recommend PFLB as a reliable vendor.
Why Choose PFLB
We’re Built for
the Big Leagues
We don’t just say we’re ready for high sales events — we’ve already handled the ones that break lesser platforms. When the traffic gets serious, so do we — and we’ve delivered, time and time again.
We Push Your Site to the Limit — Then Show You How to Fix It
We stress-test your store, show you exactly where it cracks, and give you a clear plan to fix it fast — before your customers ever notice a thing.
No In-house Performance Team? No Problem.
You get expert-level visibility and recommendations — without needing to build a team from scratch.
We’re in This With You
Whether you need advice, support, or last-minute tests before a launch, we’re on your side and always just a call away.