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Web Performance is a Journey, Not a Destination

Mehdi Daoudi

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Latest Articles from Mehdi Daoudi
There’s a lot of buzz around the speed index metric, but what exactly is this metric and how is it calculated? Even more so, why do we need a new metric when there are so many already on the plate? This article gives you detailed answers to these questions. User expectations have chang...
Websites are no longer just simple HTML pages with static content—they’ve evolved into a dynamic interface with features and content that are updated regularly. Website administrators use different techniques to ensure the user is viewing the latest version of the page or content. When...
Today’s digital world has placed a premium on the user experience. Users have become incredibly demanding, willing and able to head to a competitor’s site if just three seconds of latency occur during their time on your site. Such high demand puts web performance at the forefront of yo...
Almost all of the luxury brands that we work with are somewhere on the long and winding road between multichannel and omnichannel. For outsiders, this seems to be a small step but in reality, this is an extremely complex transition. In the luxury industry, multichannel often means that...
In 1943, a psychology theory was introduced by Abraham Maslow outlining a hierarchy of needs. The hierarchy describes the stages of growth, starting with basic survival needs and moving onto more complex needs. If basic needs are not met, higher-level needs will not be attainable and ...
Given the increasing reliance on digital systems to accomplish many everyday tasks, there’s no denying the performance — specifically, speed, and reliability — of these systems is critical to ensuring end users will have a positive experience. At the forefront are industry giants like ...
In the digital world, performance, availability, and reliability are key pillars of business that can impact revenue, reputation, and operational excellence. We often write about the impact that third-party services have on performance on our blog, but sometimes that impact is felt in ...
The Domain Name System, or DNS, provides the location/IP address of the server that hosts the domain that you are trying to access. The DNS resolution process (as explained in the image below) is the first step in the sequence of events that are triggered when you enter a domain name i...
Two years ago, we published an ebook on the True Impact of Third-party Tags. A lot can change in two years, especially when it comes to technology, so we felt it was time to revisit the sites we tested. In 2015, we analyzed sites across four verticals – US banking, ecommerce, news, and...
The year 2016 witnessed amazing progress in the field of technology – from Internet of Things (IoT) and augmented/virtual reality going mainstream, to innovations like testing the first-ever reusable rocket. The IT industry also saw a number of advancements including the rise of Cloud ...
JavaScript redefined web applications ushering in a new era of dynamic websites with fluid responsive designs. It has gained a strong following among developers, popular libraries and frameworks like JQuery and Angular JS are all built with JavaScript. The endless design possibilities ...
Synthetic monitoring is hardly a new technology. It’s been around almost as long as the commercial World Wide Web has. But the importance of monitoring the performance and availability of a web application by simulating users’ interactions with that application, from around the globe, ...
While visiting a customer last week (a large SaaS platform company), we started to have an interesting discussion around Service Level Agreements (SLAs) during which he encouraged me to write this blog. When I was tasked with setting up the QoS Team at DoubleClick in 1999, the primary...
One of the key driving factors behind the various web/mobile performance initiatives is the fact that end-users’ tolerance for latency has nose-dived. Several studies have been published whereby it has been demonstrated that poor performance routinely impacts the bottom line, viz,. # u...
A company’s collection of online systems is like a delicate ecosystem – all components must integrate with and complement each other, and one single malfunction in any of them can bring the entire system to a screeching halt. That’s why, when monitoring and analyzing the health of y...
While on a call with a customer last week, I was faced with the question of why the customer’s site had slowed down, even after they had switched to full SSL. Well, to be honest, it’s pretty obvious; SSL is more expensive from a web performance perspective. However, it wasn’t until I ...
Web performance issues and advances have been gaining a stronger presence in the headlines as people are becoming more aware of its impact on virtually every business, and 2015 was no exception. We saw a myriad of major outages this year hit some of the biggest corporations, as well as...
When it comes to protecting their brand, there is little that any successful company would not do. But what if the brand is being damaged just by people being unable to find the store? If you think of the internet as a virtual network, then DNS lookup and resolution is like the 411 ...