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How Insufficient API Testing Can Impact Your End Users

Sven Hammar

We have seen Application Programming Interfaces (APIs) emerge as a new engine for digital business transformation, tying into many parts of organization including new product innovation and the prospect of new partnership integration. In creating effective API-centric architectures, companies are breaking free from the tedium of monolithic design so that different teams can work independently to quickly produce new offerings to keep pace with market innovation. And, as APIs are increasingly published so that applications can easily make processes available to other applications, there's a world of new opportunity open to every business with the appetite and ability to capitalize on the API economy.

According to Gartner VP and distinguished analyst Kristin R. Moyer, "The API economy is an enabler for turning a business or organization into a platform." It's a positive message for platform-based businesses that are experiencing accelerated digital transformation fueled by successful API management, but it's one that should also come with a warning: given APIs' essential role in driving innovation, there is should be more focus than ever on ensuring APIs are tested properly so that they deploy and function properly.

This blog will take a look at end users – the people waiting for your websites or applications to load, and the effects insufficient testing may have in terms of site abandonment, loss of brand loyalty, and turning to a competitor's solution.

Digital Desertion: Consumer Survey Results

Now more than ever, every second counts in the online world. Slow rendering time and digital disappointment will often drive consumers to a competitor's offerings. Apica recently conducted a survey with research agency 3Gem in an effort to better understand consumers and how they are interacting with websites and apps. We surveyed 2,500 web and app users in the US, UK, and Sweden to explore their expectations regarding digital experiences and to uncover exactly what would impact their opinion of brands.

Start with Poor Website and App Performance Results in Digital Desertion to learn more about the survey results.

On average, 83 percent of consumers in all markets are affected negatively by poor website or app performance. While around half of respondents say they lose patience and are somewhat negatively affected by page loading delays, over 35 percent of respondents say they abandon poor performing sites and apps quickly – often abandoning a site in 10 seconds or less. The survey also identified that 75 percent users expect webpages and apps to load faster than they did three years ago.

These alarming statistics are often born out of great web functionality expectations gone wrong. With APIs driving much of the new functionality on today's e-commerce driven sites, thorough testing has become more important than ever before. With API testing you can cover both internal APIs as well as external. The mix is what the user will experience when he or she is trying to complete a transaction.

Done properly, API testing will minimize deployment issues and catch performance issues earlier in the development cycle.

Validating APIs can be automated to a large extent and should be performed for every release. The secret lies in performing validation constantly for all code and infrastructure changes. Validating third parties is also a constant headache, as they do not always inform you about changes. You should not of course abandon conventional UI testing; but for performance and uptime, API testing will deliver more bang for the buck.

Done properly, API testing will minimize deployment issues and catch performance issues earlier in the development cycle; this is much easier to fix versus catching issues the day of the release.

Make sure that your test tool/vendor provides support for security tools as well as modularized selection of data. It is a big plus is if the test scripts are reusable for monitoring, ideally updated via API from the build engine.


What Does This Mean for Your Business?

Apica's survey results affirm that consumers are more demanding and less forgiving when it comes to website and app performance, and businesses should heed the warning. With three-quarters of users expecting sites and apps to perform faster than they did three years ago, businesses must recognize that they need to manage the peaks and troughs of online traffic and deliver consistently exceptional customer experiences.

The survey also highlights "Digital Desertion" syndrome; if users are disappointed by their digital experience, they often move over to competitors' websites – leaving your site for one that provides a better digital experience. The revenue and brand impact is further impacted by the new reality that nearly 4 in 10 consumers indicate they would likely share a poor online experience with friends or colleagues.

There is nothing to dispute — negative digital experiences are likely to have an impact on brand reputation and loyalty.

Today, websites and apps are integral as a consumer-facing part of your business. The pressure is on companies to continuously monitor and optimize their online performance to ensure they deliver a digital experience that meets today's user expectations. This means taking a proactive approach in the development lifecycle by conducting comprehensive performance testing aimed at ensuring the user experience in production and optimal monitoring capabilities to respond to issues in production before they impact the user experience. Don't leave your revenue, brand and customer experience to chance.

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For decades, trust in the digital workplace rested on familiar signals. We trusted faces on video calls, voices on the phone, and emails that appeared to come from people we knew. These cues felt human and intuitive. They anchored how decisions were made, approvals were granted, and access was authorized. AI-powered deepfakes have quietly broken that model ...

Cloud migration was supposed to be a one-way door. For most enterprises, it turns out it isn't. Cloud data repatriation is a real and growing trend. A new survey ... finds that 89% of organizations plan to expand their on-premises infrastructure footprint over the next two years — and 75% have already moved at least some workloads back from public cloud in the past 24 months. The findings point to a broad rethinking of where data belongs ...

Over the past few years, large language models (LLMs) have revolutionized the software industry. Given their ability to excel at multi-step reasoning, LLMs have helped enterprises streamline workflows and adapt to the unknown. However, employing such models comes with sky-high costs, latency issues, and limited flexibility. In the realm of IT operations, it is generally wiser to employ smaller, domain-specific models instead ...

For years, DevOps teams operated under a simple assumption: collect enough telemetry, and you can find and fix any problem. That assumption is breaking down. Modern enterprises now operate across microservices, hybrid cloud environments, APIs, Kubernetes, and highly automated delivery pipelines. Releases happen continuously, dependencies shift constantly, and failures spread faster than teams can diagnose them ...

New Relic surveyed IT and engineering leaders from the media and entertainment (M&E) sector to understand what's working — and where challenges persist with their observability practices. The findings reveal how M&E organizations are navigating rising platform complexity, audience expectations, and AI-driven change. Below are five takeaways that stand out ...

Let me start with something I've seen play out more times than I can count. A team hits a wall with the cloud. Costs creep up, then spike. Performance starts to feel inconsistent. Someone in finance asks a simple question like "why did this double?" and nobody has a clean answer ... Maybe this isn't the right place for everything. That realization feels like a breakthrough, like you've identified the problem. In reality, you've just identified the starting line ...

In MEAN TIME TO INSIGHT Episode 24, Shamus McGillicuddy, VP of Research, Network Infrastructure and Operations, at EMA discusses network observability tool sprawl ... 

In cloud-native systems, scaling is often as simple as moving a slider. For on-premise databases, the stakes are different. Over-provisioning hardware is expensive. Under-provisioning leads to performance bottlenecks that are difficult to fix once the equipment is in the rack ...

When most people think about cybersecurity, they picture firewalls, encryption, and access controls — technical tools designed to protect systems and data. But beneath the technology lies a deeper set of principles about trust, decision-making, and resilience ... The best leaders don't eliminate risk. They manage it intelligently. And in many ways, cybersecurity offers a surprisingly useful playbook for doing exactly that ...

How Insufficient API Testing Can Impact Your End Users

Sven Hammar

We have seen Application Programming Interfaces (APIs) emerge as a new engine for digital business transformation, tying into many parts of organization including new product innovation and the prospect of new partnership integration. In creating effective API-centric architectures, companies are breaking free from the tedium of monolithic design so that different teams can work independently to quickly produce new offerings to keep pace with market innovation. And, as APIs are increasingly published so that applications can easily make processes available to other applications, there's a world of new opportunity open to every business with the appetite and ability to capitalize on the API economy.

According to Gartner VP and distinguished analyst Kristin R. Moyer, "The API economy is an enabler for turning a business or organization into a platform." It's a positive message for platform-based businesses that are experiencing accelerated digital transformation fueled by successful API management, but it's one that should also come with a warning: given APIs' essential role in driving innovation, there is should be more focus than ever on ensuring APIs are tested properly so that they deploy and function properly.

This blog will take a look at end users – the people waiting for your websites or applications to load, and the effects insufficient testing may have in terms of site abandonment, loss of brand loyalty, and turning to a competitor's solution.

Digital Desertion: Consumer Survey Results

Now more than ever, every second counts in the online world. Slow rendering time and digital disappointment will often drive consumers to a competitor's offerings. Apica recently conducted a survey with research agency 3Gem in an effort to better understand consumers and how they are interacting with websites and apps. We surveyed 2,500 web and app users in the US, UK, and Sweden to explore their expectations regarding digital experiences and to uncover exactly what would impact their opinion of brands.

Start with Poor Website and App Performance Results in Digital Desertion to learn more about the survey results.

On average, 83 percent of consumers in all markets are affected negatively by poor website or app performance. While around half of respondents say they lose patience and are somewhat negatively affected by page loading delays, over 35 percent of respondents say they abandon poor performing sites and apps quickly – often abandoning a site in 10 seconds or less. The survey also identified that 75 percent users expect webpages and apps to load faster than they did three years ago.

These alarming statistics are often born out of great web functionality expectations gone wrong. With APIs driving much of the new functionality on today's e-commerce driven sites, thorough testing has become more important than ever before. With API testing you can cover both internal APIs as well as external. The mix is what the user will experience when he or she is trying to complete a transaction.

Done properly, API testing will minimize deployment issues and catch performance issues earlier in the development cycle.

Validating APIs can be automated to a large extent and should be performed for every release. The secret lies in performing validation constantly for all code and infrastructure changes. Validating third parties is also a constant headache, as they do not always inform you about changes. You should not of course abandon conventional UI testing; but for performance and uptime, API testing will deliver more bang for the buck.

Done properly, API testing will minimize deployment issues and catch performance issues earlier in the development cycle; this is much easier to fix versus catching issues the day of the release.

Make sure that your test tool/vendor provides support for security tools as well as modularized selection of data. It is a big plus is if the test scripts are reusable for monitoring, ideally updated via API from the build engine.


What Does This Mean for Your Business?

Apica's survey results affirm that consumers are more demanding and less forgiving when it comes to website and app performance, and businesses should heed the warning. With three-quarters of users expecting sites and apps to perform faster than they did three years ago, businesses must recognize that they need to manage the peaks and troughs of online traffic and deliver consistently exceptional customer experiences.

The survey also highlights "Digital Desertion" syndrome; if users are disappointed by their digital experience, they often move over to competitors' websites – leaving your site for one that provides a better digital experience. The revenue and brand impact is further impacted by the new reality that nearly 4 in 10 consumers indicate they would likely share a poor online experience with friends or colleagues.

There is nothing to dispute — negative digital experiences are likely to have an impact on brand reputation and loyalty.

Today, websites and apps are integral as a consumer-facing part of your business. The pressure is on companies to continuously monitor and optimize their online performance to ensure they deliver a digital experience that meets today's user expectations. This means taking a proactive approach in the development lifecycle by conducting comprehensive performance testing aimed at ensuring the user experience in production and optimal monitoring capabilities to respond to issues in production before they impact the user experience. Don't leave your revenue, brand and customer experience to chance.

The Latest

Enterprises today operate in a real-time environment where uninterrupted access to trusted data has become a baseline expectation for users, applications and automated systems. Traditional DataOps models, built on manual effort and human triage, cannot keep pace with this always active demand. AI agents are emerging as the operational backbone, ensuring consistent data availability, reinforcing trustworthiness and enabling a level of scale that manual processes cannot achieve ...

For decades, trust in the digital workplace rested on familiar signals. We trusted faces on video calls, voices on the phone, and emails that appeared to come from people we knew. These cues felt human and intuitive. They anchored how decisions were made, approvals were granted, and access was authorized. AI-powered deepfakes have quietly broken that model ...

Cloud migration was supposed to be a one-way door. For most enterprises, it turns out it isn't. Cloud data repatriation is a real and growing trend. A new survey ... finds that 89% of organizations plan to expand their on-premises infrastructure footprint over the next two years — and 75% have already moved at least some workloads back from public cloud in the past 24 months. The findings point to a broad rethinking of where data belongs ...

Over the past few years, large language models (LLMs) have revolutionized the software industry. Given their ability to excel at multi-step reasoning, LLMs have helped enterprises streamline workflows and adapt to the unknown. However, employing such models comes with sky-high costs, latency issues, and limited flexibility. In the realm of IT operations, it is generally wiser to employ smaller, domain-specific models instead ...

For years, DevOps teams operated under a simple assumption: collect enough telemetry, and you can find and fix any problem. That assumption is breaking down. Modern enterprises now operate across microservices, hybrid cloud environments, APIs, Kubernetes, and highly automated delivery pipelines. Releases happen continuously, dependencies shift constantly, and failures spread faster than teams can diagnose them ...

New Relic surveyed IT and engineering leaders from the media and entertainment (M&E) sector to understand what's working — and where challenges persist with their observability practices. The findings reveal how M&E organizations are navigating rising platform complexity, audience expectations, and AI-driven change. Below are five takeaways that stand out ...

Let me start with something I've seen play out more times than I can count. A team hits a wall with the cloud. Costs creep up, then spike. Performance starts to feel inconsistent. Someone in finance asks a simple question like "why did this double?" and nobody has a clean answer ... Maybe this isn't the right place for everything. That realization feels like a breakthrough, like you've identified the problem. In reality, you've just identified the starting line ...

In MEAN TIME TO INSIGHT Episode 24, Shamus McGillicuddy, VP of Research, Network Infrastructure and Operations, at EMA discusses network observability tool sprawl ... 

In cloud-native systems, scaling is often as simple as moving a slider. For on-premise databases, the stakes are different. Over-provisioning hardware is expensive. Under-provisioning leads to performance bottlenecks that are difficult to fix once the equipment is in the rack ...

When most people think about cybersecurity, they picture firewalls, encryption, and access controls — technical tools designed to protect systems and data. But beneath the technology lies a deeper set of principles about trust, decision-making, and resilience ... The best leaders don't eliminate risk. They manage it intelligently. And in many ways, cybersecurity offers a surprisingly useful playbook for doing exactly that ...