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Accelerate growth with stable platforms

Performance and Resilience Diagnostics

Unlock your technology edge

Slow is the new down. Sluggish systems erode trust, but performance problems rarely announce themselves clearly. By the time symptoms are visible, the underlying cause has often been present for months, and the instinct to act fast can lead teams further from the answer. Capacitas delivers a precise, expert-led diagnosis that finds the root cause, quantifies the risk and tells your teams exactly what to fix first. Not a report.
A resolution plan.

Performance-driven outcomes

When systems underperform, the instinct is often to look at infrastructure, tooling or the last release. But the real causes are frequently buried deeper, in the interaction between services, in the relationship between demand and throughput, in the gaps between what SLOs promise and what systems actually deliver.

 

Capacitas brings a depth of performance engineering expertise. 20+ years of experience backed by proprietary methodologies that make it possible to look at any system, across any technology stack, and build a precise, consistent picture of where performance breaks down and why. We deliver not just findings, but a clear mitigation plan your teams can act on, with impact achievable in just a handful of days.

89%

reduction in production incidents following our performance remediation

— UKHSA

£12M

increase in Black Friday revenue for a major e-commerce platform by eliminating critical system bottlenecks

— JD Sports

$2m

Pinpointed 5-critical performance optimisations to improve client experience and reduce service penalties of $2m annually

— a $2tn Asset Management firm

Edge unlocked

Protect revenue and reputation 
Diagnose performance issues before they compound into outages or customer-facing failures that affect your bottom line.

Accelerate resolution
Move from symptoms to root cause with expert analysis, not trial and error, reducing time to fix and operational disruption.

Build lasting resilience
Understand not just what went wrong, but how your organisation got there, so the same issues do not recur.

Gain capability, not dependency
Collaborate throughout to upskill your teams, and embed the knowledge and instincts to diagnose and prevent performance issues independently.

THE TECHNOLOGY EDGE: PERFORMANCE PROBLEMS AREN'T NECESSARILY COMPLEX, THEY'RE JUST UNDIAGNOSED. WE GIVE YOU THE CLARITY TO PINPOINT EXACTLY WHAT'S WRONG, THE CONTROL TO FIX IT FAST, AND CONFIDENCE THAT IT WON'T COME BACK.

Our Clients
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whitbread
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FNZ

How we work

Precision diagnostics. Fast resolution. 

Our diagnostic process is designed to move fast and deliver value quickly, from first data capture to a clear remediation plan, with quick wins implemented along the way:

 1. Diagnose: Capture the full performance picture
We gather production performance data from your existing tooling, review SLOs, SLAs, incident logs and performance test results, and conduct structured interviews across QA, engineering, architecture and DevOps. This builds a complete, evidence-based baseline. 
 2. Fix: Deliver findings and drive resolution
Using our proprietary R0F methodology and Seven Pillars of Performance framework, we pinpoint root causes with precision, present a prioritised remediation plan and work directly with your teams to implement fixes with measurable impact achievable within two weeks. 

Amplify system performance

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Proprietary methodology, not general analysis

Our Seven Pillars of Performance framework and R0F methodology give us a repeatable, vendor-agnostic way to examine any system and surface issues that standard tooling and ad hoc analysis routinely miss. The result is a diagnosis you can trust and act on.

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Root cause, not just symptoms

Most performance investigations stop at the visible failure. We go further, examining the interaction between metrics over time and the delivery practices that led to the problem, so that remediation addresses the underlying cause and prevents recurrence.

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Impact in days, not months

Structured to deliver value fast. Many quick wins can be identified and implemented within the engagement itself. Measurable performance improvement is typically achievable within two weeks, reducing the time your systems are at risk and your business is exposed.

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Consistent view across any stack

Our 16 service metrics provide a consistent performance language that applies across any vendor, technology or architecture. This makes it possible to compare, benchmark and communicate system performance clearly across teams, stakeholders and leadership.

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Performance and efficiency, together

Fixing performance issues frequently unlocks efficiency gains. Systems running at the right performance point consume less resource, reducing cloud spend and making existing budgets go further. Improved performance and lower operating cost are two sides of the same outcome.

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Partner from diagnosis to resolution

We do not hand over a report and leave. Our teams are focused on improving outcomes, so we work alongside yours, explaining findings, prioritising the remediation plan, and supporting implementation where needed. You’re left with clarity, control and the capability to sustain performance independently.

Capacitas were engaged at very short notice to investigate performance issues within two key applications.
The work was completed within the timescales specified and the conclusions clearly communicated and reported. The recommendations provided are now being followed up as a matter of urgency. I have no hesitation in recommending Capacitas to other companies - our endorsement is we will use them again!

Racquel Murray

Head of IT Development, Scottish Water

Capacitas was a true partner. Their ability to dig into performance metrics and uncover actionable insights helped us reduce infrastructure consumption and improve service resilience. Beyond their technical expertise, they brought empathy and agility - fitting seamlessly into our team, even during high-pressure periods of change.

Andre Brunetiere

CTO & CPO, Cegid

Capacitas helped us embrace a mindset of curiosity — getting teams to ask why things behave the way they do, and to look closely at performance, utilisation, and cost side by side. That behavioural shift is one of the biggest wins 

Nik Sathe

CPO & CTO Blackhawk Network

FAQs

What is Performance and Resilience Diagnostics?

Performance and Resilience Diagnostics is a focused, expert-led service that identifies the root causes of performance issues in live systems - whether those are manifesting as slowdowns, instability, outages or a degraded digital experience. The output is a clear, evidence-based picture of what is wrong and a structured plan to fix it.

When should an organisation use this service?

 This service is most immediately relevant when performance issues are already visible - through customer complaints, lost revenue, churn rates, incident logs, SLA breaches or degraded system behaviour. It is also valuable as part of a broader maturity assessment, or when preparing for periods of peak demand where system resilience needs to be validated in advance. 

What makes the Capacitas approach different?

The depth of expertise is significant, with 20+ years of performance engineering heritage. More distinctively, our proprietary methodologies such as the Seven Pillars of Performance framework, 16 service metrics and R0F shape-based analysis give us a consistent, vendor-agnostic way to examine any system and identify issues that general analysis misses. We look at both the live system data and the delivery practices that created the current state, and we upskill your teams as we work, so you’re left stronger and with the capabilities to continue your success.

How quickly can we expect to see results?

The diagnostic itself delivers findings quickly. Quick wins are identified during the engagement, and these can be implemented within the engagement timeline. Measurable performance improvement is typically achievable within two weeks of engagement start, significantly faster than traditional investigation approaches.

Will this service disrupt our existing operations?

No. The diagnostic process works from existing production data and tooling wherever possible, minimising disruption to BAU operations. Where additional instrumentation is needed to fill data gaps, this is deployed with minimal operational impact. Stakeholder interviews and process reviews are structured to fit around your team's commitments.

Does this service work across different technology stacks?

Yes. Our 16 service metrics and R0F methodology are designed to be vendor-agnostic, applicable across any technology stack, architecture or cloud environment. This makes it possible to diagnose performance consistently across complex, multi-technology estates. Our approach has delivered measurable impact across:



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