Measured Performance and Load Testing Services

Software that is correct can still be unusable. Performance testing measures how your application behaves when real numbers of people use it at once: how quickly it responds, how far it scales before it degrades, and what breaks first when it does.

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What Clients Say About Our Performance Testing Services

Independent reviews from Clutch and DesignRush. Every review below is shown in full and links back to its source platform so you can confirm it yourself.

4.9/5.0 12 reviews View all reviews on Clutch

5.0/5.0 6 verified reviews View all reviews on DesignRush

5.0

Mar 2026

“The team demonstrated strong professionalism, reliability, and a proactive approach throughout the project.”

AgileTech Viet Nam developed a scalable engineering workflow system for an ICT company. The goal was to streamline internal processes, improve cross-team visibility, and enhance coordination. The system significantly improved operational efficiency by reducing manual processes and increasing transparency across teams for the client. AgileTech Viet Nam set clear milestones and provided regular updates to ensure everyone remained in sync. Their professionalism and reliability stood out.

Scalable engineering workflow system with fewer manual processes

5.0

Jun 2025

“Their proactive communication, flexibility, and technical expertise stood out throughout the project.”

AgileTech Viet Nam used React Native to develop an iOS and Android app for a real estate platform. The team integrated the app with the client’s backend and implemented property search features. AgileTech Viet Nam’s high-quality work resulted in a 30% increase in user registrations and over 1,000 app downloads within the first month. The team delivered on time, provided regular updates, and responded to feedback. Their flexibility and proactive communication impressed the client.

30% more sign-ups and 1,000+ downloads in the first month

5.0

May 2026

“They followed a structured Agile approach with clearly defined milestones.”

AgileTech Viet Nam developed a web-based logistics management system for an automotive parts supplier. The team integrated the platform with third-party providers and built a real-time tracking dashboard. AgileTech Viet Nam’s work reduced manual processing by 55%, improved real-time shipment visibility, and increased operational efficiency across multiple departments. The team followed a structured Agile approach, communicated consistently, delivered on time, and was flexible.

Manual processing reduced by 55% with real-time shipment visibility

5.0

May 2026

“They were not just executing tasks but were genuinely invested in the product’s success.”

AgileTech Viet Nam developed an MVP for a digital solutions provider’s marketplace platform. They created the UI/UX design, developed the front- and backend, and integrated payment systems. AgileTech Viet Nam successfully launched the MVP on time, allowing the client to onboard 500 users within two months. The platform was stable with minimal issues. Moreover, the team was collaborative, flexible, quick to adapt to changing priorities, and genuinely invested in the project’s success.

MVP launched on time, 500 users onboarded within two months

5.0

May 2026

“Their ability to handle both high-level architecture and hands-on implementation is rare.”

An IT services company hired AgileTech Viet Nam to re-architect their enterprise SaaS platform. The team conducted a technical audit, designed a new architecture, migrated legacy data, and added API gateways. Thanks to AgileTech Viet Nam’s work, the client saw improvements in system scalability, platform uptime, and deployment time. The team followed the Agile methodology, communicated effectively, and was responsive to the client’s feedback. AgileTech Viet Nam helped the client make better decisions.

Improved scalability, uptime, and deployment time on an enterprise SaaS

5.0

May 2026

“Their balance between technical expertise and product thinking stood out.”

AgileTech Viet Nam developed an AI-powered analytics platform for an AI visibility and GEO solutions company. The platform featured real-time reporting dashboards and data processing pipelines. AgileTech Viet Nam’s work improved the client’s data processing efficiency and the accuracy of AI-generated insights. The platform was user-friendly and supported the client’s first large-scale deployments. AgileTech Viet Nam’s team was communicative, adaptive, and technically proficient.

Improved data-processing efficiency and AI insight accuracy

5.0

May 2026

“They were flexible in accommodating evolving business needs while still keeping the project on track.”

AgileTech Viet Nam developed a digital platform for a real estate firm. They designed the UI/UX, implemented advanced search and filtering functionalities, integrated dashboards, and automated reporting tools. The platform improved operational efficiency, business performance, lead conversion rates, and customer responsiveness. AgileTech Viet Nam implemented a well-structured project management approach, meeting timelines and responding to feedback with flexibility. Their tailored solutions stood out.

Improved efficiency, business performance, and lead conversion

5.0

Nov 2024

“The platform has greatly improved our operational efficiency, and we wholeheartedly recommend AgileTech.”

Working with AgileTech has been an amazing experience, especially when it comes to creating a personalized e-learning program for our IT services business. We were pleasantly surprised by how adaptable and scalable the platform developed by the AgileTech Team was. Their proficiency with user-friendly course administration and community participation technologies enabled us to provide a thorough instructional resource catered to our customers’ particular requirements. The platform has greatly improved our operational efficiency, and we are amazed by its capacity to manage heavy traffic with ease and offer comprehensive reporting and analytics. The platform remained successful and user-friendly because of the team’s dedication to continuous support and their quick response to criticism. For any organization looking to create innovative and reliable digital solutions, we wholeheartedly recommend AgileTech as a partner.

Personalized e-learning platform that handles heavy traffic

5.0

Nov 2024

“They used a potent tech stack including PHP, React, and AWS to guarantee perfect scalability and zero downtime.”

AgileTech provided a superb Learning Management System (LMS) that creatively and precisely addressed the intricate needs of our organization. Within a scalable, completely customizable platform, the LMS made it possible to create comprehensive courses, administer student tests, engage the community, and obtain real-time data insights. AgileTech’s modular and agile approach made sure that every component, from the user-friendly course builder to the sophisticated analytics and communication tools, was customized to meet our demands despite the difficulties of developing such a feature-rich system. In order to guarantee perfect scalability and zero downtime, even with high user concurrency, AgileTech used a potent tech stack that included PHP, React, and AWS. Their post-launch assistance, which included frequent training sessions and upgrades, gave our staff the means to fully use the LMS’s potential. This project was a testament to AgileTech’s technical skill, rapid deployment, and dedication, making them an outstanding choice for educational technology development.

Feature-rich LMS with course builder, analytics, and comms

5.0

Nov 2024

“We saw huge cost savings and optimized stock levels, so we consider AgileTech a partner in our company transformation.”

AgileTech created a working Supply Chain Management (SCM) system that has helped our supermarket chain simplify operations across inventory management, demand forecasting and logistics. They integrated our existing systems, automated inventory and logistics and gave us robust demand forecasting with AI, we saw huge cost savings and optimized stock levels. And they continued to deliver on quality post launch with regular updates and training sessions, so we consider AgileTech as a partner in our company transformation.

AI-driven demand forecasting across inventory and logistics

5.0

May 2026

“Their professionalism, responsiveness, and ability to execute efficiently made them feel like an operational partner.”

AgileTech Viet Nam optimized a workflow for a consulting firm. The team improved lead management processes and streamlined internal communication systems across multiple departments. AgileTech Viet Nam’s work improved the client’s operations, customer communication process, and overall workflow efficiency. The team was strategic and reliable. Moreover, AgileTech Viet Nam worked closely with the client to understand their business objectives and recommend solutions.

4.5

Apr 2021

“They are incredible to work with and are truly passionate about technology and our concept.”

AgileTech Viet Nam provides mobile app development services for a social media startup. They are building the app using Node.js and Flutter. With the ongoing partnership, AgileTech Viet Nam’s passion has impressed the client so far. The team is truly into technology, and their concept makes the client feel confident about the project’s continuous success.

4.0

Jun 2019

“I was impressed with the flow of the project.”

AgileTech Viet Nam developed a mobile app from scratch. After helping with scoping and objective formation, AgileTech created design mockups and developed the full iOS and Android solutions. Valuable user data is being gathered in ongoing beta tests, which will soon lead to growth and expansion opportunities. AgileTech Viet Nam provided consistent communication and established a smooth workflow. Issues were raised proactively, allowing fixes to come earlier in the process.

5.0

Nov 2024

“AgileTech excelled in supporting our project from initial mock-ups through to the final delivery on the App Store.”

AgileTech excelled in supporting our project from initial mock-ups through to the final delivery on the App Store, incorporating data analytics that we could easily share with our customers. The scope of work included mock-up creation, UI/UX design, interactive prototyping, app development, rigorous testing, and setting up a secure production environment on AWS, culminating in the apps release on both iOS and Android platforms.

5.0

Nov 2024

“Since we launched our new site we’ve seen a significant increase in traffic and sales, which proves their work is effective.”

We’ve had an amazing experience with AgileTech for our eCommerce platform. The team worked with us to build an user friendly online store that met all our business needs. Their eCommerce development expertise was evident from the start as they shared valuable insights on how to maximize sales. The AgileTech team are not only talented but also care about their clients success. Since we launched our new site we’ve seen a significant increase in traffic and sales which proves their work is effective.

5.0

Nov 2024

“Their attention to detail in web development and UI/UX design has given us a site that looks great and works flawlessly.”

Working with AgileTech has been a game changer for us. We wanted a modern and responsive website and AgileTech delivered more than we expected. The team was super collaborative and involved us in every step of the process. Their attention to detail in web development and UI/UX design has given us a site that looks great and works flawlessly. The AgileTech team members are not only talented professionals but also great communicators, so we could share our vision and ideas easily. They were so committed to our success and the end result has increased our user engagement and satisfaction so much.

Explore all 16 client testimonials

Benefits of Performance Testing

Explore the benefits AgileTech Vietnam delivers for every performance and load testing services engagement.

Capacity Established Before Launch, Not During It

A campaign, a seasonal peak, or a launch concentrates months of traffic growth into a single day. Testing beforehand establishes how much load the system carries and where it stops carrying it, so the capacity decision is made against measurement rather than optimism. Discovering the ceiling during the event is the most expensive way to learn it.

The Bottleneck Identified, Not Just the Symptom

A slow page is a symptom. The cause is usually a specific query, a connection pool, a synchronous call to a third party, or a resource limit. We measure at the layers underneath the response time so the finding names the component that gave way, because knowing the system is slow at 500 users is far less useful than knowing which part of it is.

Evidence for Infrastructure Decisions

Scaling decisions are often made on instinct and paid for monthly. Load test results show whether an upgrade would actually remove the constraint or simply move it, which sometimes shows that provisioning is not the answer at all and that a single query or a missing index is the real limit.

Our Performance Testing Process

Six phases from agreeing realistic targets to a report that names the constraint, with the workload modelled on how your users behave rather than on a generic script.

Establishing Targets and Realistic Load

We agree what acceptable looks like: response times for the flows that matter, the concurrency you expect, and the peak you need to survive. Targets come from your traffic data and business plans. Testing against an invented number produces a result that cannot inform any decision.

Workload Modelling

We build a model of how users actually behave, including the mix of actions, think time between them, and the proportion following each path. A script that hammers one endpoint at full speed measures that endpoint and tells you very little about the system, because real load is uneven and that unevenness is often what exposes the weakness.

Environment and Data Preparation

Results are only meaningful if the environment is comparable to production and the data volumes are realistic. A query that is instant against a thousand rows can be unusable against ten million. Where the test environment differs from production we record the difference and state its effect on the findings.

Test Execution

We run the relevant scenarios: load at expected volume, stress beyond it to find the ceiling, soak over extended periods to expose leaks and degradation, and spike to test sudden surges. Which of these apply depends on your risk. Not every system needs all four, and we say which ones yours does not.

Analysis and Bottleneck Identification

We correlate response times with resource usage, database behaviour, and application metrics to establish what actually constrained the system. The output identifies the component that gave way and the evidence for that conclusion, rather than reporting that performance degraded at a particular load.

Reporting and Retest After Remediation

The report states the measurements, the constraint, the recommendation, and our confidence in it. After your team makes changes we retest under identical conditions, because a performance fix that has not been measured under the same workload has not been verified.

AgileTech Vietnam: Your Performance Testing Partner

The reasons global companies trust AgileTech Vietnam to deliver this service, from deep expertise to uncompromising quality and security.

We Model Behaviour, Not Just Volume

Load is generated from a model of how your users actually move through the product. Uniform traffic against a single endpoint produces a clean graph and an unreliable conclusion.

Findings Name a Component

Our reports identify what constrained the system, whether that is a query, a pool, an external dependency, or a resource limit. A result stating only that response time rose does not tell an engineer what to change.

We Report Environment Limitations

Where the test environment differs from production we state the difference and what it means for confidence in the result. Presenting figures from a smaller environment as production capacity would be misleading.

Engineers Who Have Built the Systems

Performance analysis benefits from knowing how applications are constructed. Our QA engineers work alongside developers who build and operate production systems, which shortens the distance between a symptom and its cause.

Established Open Tooling

We use Apache JMeter, K6, and Locust, which are mature, widely understood, and produce artefacts your team can rerun after we leave. There is no proprietary harness that stops working when the engagement ends.

We Say When Testing Is Not the Priority

If an obvious architectural constraint or an unindexed table will dominate any result, we tell you before running a full programme. Measuring a system in that state produces a report confirming what was already visible.

10+ years operating as a software engineering company in Vietnam.
200+ talented developers and QA engineers employed in house.
300+ projects completed with 90% customer satisfaction rate.
Refined Quality Management practices verified by ISO 9001:2015
Powerful Security Management practices supported by ISO 27001:2013
Named Top App Developer in Vietnam by Clutch.co

Technologies We Work With

The languages, frameworks, and platforms our engineers rely on for performance testing.

Apache JMeter

K6

Locust

Who can Benefit from AgileTech's Performance Testing Services?

Products Facing a Known Traffic Peak

A sale, a campaign, an enrolment window, or a launch compresses a large volume of usage into a narrow period. The load is predictable in timing and often in size, which makes it exactly the kind of risk that can be tested for in advance.

Systems That Have Grown Past Their Original Design

Applications are usually built for the load expected at the time. Data volumes grow, integrations accumulate, and user numbers rise, until behaviour that was instant becomes noticeably slow without any single change being responsible.

Teams Making an Infrastructure or Architecture Decision

Proposals to scale up, re-platform, or restructure a component are often argued from experience rather than measurement, and they carry ongoing cost once implemented.

Best Practices for Choosing your Performance Testing Partner

Six practical steps to evaluate and select the right partner for your project.

Ask how they will model your workload

The answer should reference your traffic patterns, the mix of user actions, and think time. If the plan is to drive one endpoint at maximum rate, the results will describe that endpoint rather than your system.

Check the report identifies causes, not just numbers

Request a sample report and look for whether it names the constraining component and shows the evidence. A report consisting of response time graphs leaves the diagnostic work still to be done.

Establish how environment differences are handled

Testing rarely happens in production. Ask how the partner accounts for a smaller environment and whether they state the effect on confidence, because a figure presented without that caveat can be badly misleading.

Confirm the test assets are yours

Scripts and workload models should be handed over in a form your team can rerun. Assets locked in a proprietary platform mean repeating the exercise means repeating the purchase.

Ask what they do if they find an obvious problem early

A partner who spots a dominant constraint in the first day and continues the full programme regardless is billing time rather than solving your problem.

Agree the retest terms before starting

Establish whether a retest after remediation is included and under what conditions. Verifying a fix requires running the identical workload, and this is much cheaper to agree upfront than to negotiate afterwards.

Flexible Engagement Models

Choose the engagement model that fits your project size, budget, and timeline. All models include dedicated communication channels and transparent progress tracking.

Frequently Asked Questions

What is the difference between performance testing and the other types of testing you provide?

Functional testing asks whether the software does what was specified. Performance testing asks whether that correct behaviour survives real load, measuring speed, stability, and the point at which the system degrades. Security testing asks whether the software can be misused. Automation testing is a delivery mechanism for repeatable checks rather than a separate type. Performance work is normally most useful once functional correctness has been established, because measuring a system that behaves incorrectly under load tells you little.

What is the difference between load, stress, soak, and spike testing?

Load testing runs the volume you expect and confirms the system meets its targets. Stress testing pushes beyond that to find the ceiling and observe how failure occurs. Soak testing holds a sustained load over hours to expose memory leaks and gradual degradation. Spike testing applies a sudden surge to test how the system copes with abrupt change. Which of these matter depends on your risk profile, and we will say which do not apply to you.

Do you test against production or a separate environment?

Usually a dedicated performance environment, because generating heavy load against production risks affecting real users. Where the environment is smaller than production we record the difference and state what it means for the confidence in each finding rather than presenting the numbers as production capacity.

Can you tell us how many concurrent users our system supports?

We can measure it, but we will not estimate it beforehand. The answer depends on your architecture, data volumes, infrastructure, and the mix of actions users perform. Any figure quoted before testing would be a guess, and a guess about capacity is worse than no figure at all because it gets planned against.

Will you fix the performance problems you find?

The testing engagement identifies and evidences the constraints. Remediation is separate work, which your team may carry out or which we can quote for through our development services. We keep the two distinct so that the findings are not shaped by an interest in selling the fix.

What tools do you use for performance testing?

Apache JMeter, K6, and Locust. All three are established open tools, which means the scripts and workload models are handed over in a form your team can rerun independently after the engagement ends.

Is performance testing not the same as production monitoring?

No, and both are worth having. Performance testing measures behaviour under controlled load before release, so problems are found before users meet them. Production monitoring observes the live system continuously and tells you what is happening now. Monitoring is part of the ongoing operational practice covered by our DevOps services, while this service establishes capacity and constraints in advance.

How long does a performance testing engagement take?

It depends on the number of scenarios in scope, how ready the test environment and data are, and how many cycles of remediation and retest you need. Environment preparation is frequently the longest part. We scope after reviewing the system rather than quoting a standard duration.

Is AgileTech Vietnam ISO certified for QA delivery?

Yes. Our quality management practices are verified by ISO 9001:2015 and our security management practices are supported by ISO 27001:2013. Both apply to performance testing engagements, which typically require access to systems and production-like data volumes.

Trusted and Recognized

Independent directories, certification bodies, and award programs that have assessed our work. Each badge links to its source or names the standard behind it, so every claim on this page can be checked at first hand.

Top Software Development Company - GoodFirms

TechBehemoths Awards - Mobile App Development

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