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Accelerate Growth with Stable Platforms

Site Reliability and Observability

Unlock your technology edge

The same incident, recurring. The same teams, scrambling. Every time. When business-critical platforms fail, the damage goes beyond the ticket queue. Revenue gets lost, reputations get dented, operating models get exposed. Capacitas builds the site reliability and observability foundations that break that cycle, giving you year-round confidence that performance holds when it counts.

Reliability engineered from experience

Site reliability and observability are distinct but deeply connected. Site reliability is about ensuring systems meet their performance and uptime objectives, and that when they do not, there is a clear, accountable process for identifying, escalating and resolving the issue. Observability is about having the visibility to know what is happening inside a system in real time, so that problems are understood when they occur, anticipated before they recur, and prevented where possible.

 

Capacitas approaches both from the perspective of engineers with 20+ years of experience. We have seen the failure modes, the organisational gaps and the operational patterns that lead to repeat incidents across retail, financial services, SaaS and government. Our focus is not on delivering a central SRE team and stepping back. It is on building the strategic framework, the operating model and the building blocks that enable your product teams to own reliability, with Capacitas as the accountable programme partner that brings business, engineering and operations into alignment.

60%

faster incident resolution; 40% reduction in monthly resourcing

— a FTSE 100 firm

82%

Increase in online order throughput; 4 successful Black Friday periods with zero revenue impact

— JD Sports

$3m

p.a. reduction in service penalties; 13 system risks resolved in a core payments platform

— a Global payments firm

Edge unlocked

Protect revenue and reputation year round
Move from reactive incident management to proactive reliability engineering, with clear objectives, measurable SLOs and an operating model built to sustain them.

Give your CTO confidence going into every peak and every release
With validated reliability foundations and a structured programme that owns risk, not just reports it.

Enable teams to deliver faster, with less friction
Clear objectives, reduced alert noise and better alignment between business outcomes and engineering priorities mean less firefighting and more forward momentum.

THE TECHNOLOGY EDGE: RELIABILITY ISN'T A HEADCOUNT DECISION, IT'S A CAPABILITY DECISION. WE BRING THE STRATEGIC FRAMEWORK, THE PERFORMANCE ENGINEERING DEPTH AND THE ACCOUNTABILITY TO TURN REACTIVE INCIDENT RESPONSE INTO A YEAR-ROUND COMPETITIVE ADVANTAGE.

Our clients
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A four-stage model for Site Reliability and Observability

Our four-stage model builds a complete, sustainable reliability capability, from understanding current state through to an operating model your teams can own and evolve:

1. Discover

Assess reliability and observability maturity and target state
We start with our SRE maturity assessment that covers site reliability practices, observability coverage, incident management processes, and the alignment between business objectives and engineering delivery. This establishes where reliability risks are concentrated, where observability gaps leave teams blind to emerging issues, and what the highest-value building blocks are to put in place first.

2. Realise

Build the reliability foundations and observability capability
We implement the building blocks identified in the Discover stage. SLOs and SLAs are established, then translated into technical metrics that engineering teams can build to. Alert noise is reduced by focusing on signals that matter. Observability is extended to give teams real-time visibility into system behaviour, enabling issues to be proactively identified.

3. Transform

Embed reliability as a sustained, year-round capability
The goal is a reliability capability that your teams own and operate independently, not a programme that requires ongoing external management to sustain. We embed the frameworks, scorecards and ways of working that enable product teams to manage their own reliability objectives, with clear accountability, consistent measurement and reporting.

4. Support

Maintain the gains
Periodic checks for up to 12 months post-implementation ensure SRE and observability capability are retained, and outcomes are sustained.

Amplify system reliability

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Site reliability first, engineering second

Capacitas focuses on site reliability: the strategic, consultative discipline of defining objectives, building operating models and ensuring accountability for outcomes, as much as on the engineering delivery. This is where the most transformative value sits: getting the right objectives defined, the right people aligned, and the right frameworks in place, so that engineering effort is focused on what actually improves reliability.

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Accountability that goes beyond the risk register

Most consultancies identify risks and present them. Capacitas takes ownership of ensuring they are resolved. Where a risk is raised, we track it, escalate it and work directly with the teams responsible for mitigation, diving into the problem, supporting diagnosis and staying accountable until it is closed. That distinction between flagging risk and owning it is what makes the difference between a report and a result.

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The glue between business, engineering and operations

SRE sits at the intersection of three functions that rarely speak the same language. Capacitas acts as the connective layer, translating business growth objectives into engineering targets, ensuring those targets are measurable in production, and giving operations teams the clarity they need to monitor and respond effectively. One reporting funnel. Shared accountability. Aligned outcomes.

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Observability that anticipates, not just reports

Observability is most valuable when it enables teams to understand what is about to happen, not just what has already gone wrong. We build observability foundations that reduce alert noise, extend real-time visibility across critical services and establish the non-functional requirements and SLO frameworks that give teams early warning of emerging issues before they become incidents.

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From peak programme to year-round reliability

Many SRE engagements begin as a focused peak readiness programme and mature into something broader. Once the peak is navigated successfully, the case for year-round reliability management becomes clear. Capacitas is experienced in making that transition, converting a time-pressured peak programme into a sustained, lower-intensity reliability operating model that protects revenue and reputation every month of the year.

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Performance engineering at the core

Capacitas are performance engineers first. Everything we bring to site reliability and observability is grounded in 20+ years of experience understanding how systems behave under real-world demand. That means our SLO definitions are rooted in actual system behaviour, our observability recommendations are based on what matters under load, and our reliability frameworks are built to hold at the moments that matter most commercially.

Capacitas didn’t just optimise cost - they enhanced consistency, observability and trust across our platform.

Andre Brunetiere

CTO & CPO, Cegid

When it came to observability and performance assurance, Capacitas made the complex simple and brought clarity where others brought noise.

Simon Prior

Head of QE, easyJet

FAQs

What is the difference between Site Reliability and Observability?

Site reliability is the practice of defining what ‘good’ looks like for your critical systems, in terms of performance, uptime and user experience, and building the operating model to consistently deliver it. Observability is the capability to see inside those systems in real time: to understand what is happening, why it is happening and what is likely to happen next. The two are complementary: reliable systems require observable ones, and observability without reliability objectives lacks the context to be actionable.

What does Capacitas actually do in an SRE engagement?

The majority of the work sits on the strategic and planning side rather than the delivery side. We identify what the problems are, define the objectives that need to be solved collectively across business, engineering and operations, and distil those into a clear programme of deliverables for the teams responsible. We build the operating model, the service catalogue, the SLO framework and the scorecard approach that gives leadership visibility. Critically, we do not just raise risks, we own them, tracking and driving resolution even where another team is doing the delivery work.

Are you delivering a central SRE team, or enabling the teams already there?

Both, depending on what the organisation needs. The primary value Capacitas provides is in building the reliability frameworks, operating model and capability that enable your product teams to own their own SLO delivery. Where a central SRE function is needed, we can provide it. But the more powerful and enduring outcome is giving the teams already there the building blocks, the objectives and the accountability structures to manage reliability themselves, with Capacitas as the strategic programme partner.

How does this service relate to Peak Readiness?

Many SRE engagements begin as a Peak Readiness programme, a focused effort to get systems and teams ready for a high-stakes event. Once the peak is navigated successfully, it becomes clear that the operating model, frameworks and accountability structures built for peak are just as valuable year round. Capacitas helps organisations make that transition, converting a time-pressured peak programme into a sustained reliability capability that does not require a crisis to justify.

Is this service only relevant for consumer-facing organisations?

Site reliability and observability are most commonly triggered by consumer-facing platforms, retail, e-commerce, financial services and travel and transport, where uptime failures are immediately visible and commercially damaging. However, the same principles apply to any system where reliability is business-critical: B2B platforms, payment services, order management systems and government services all carry significant operational and reputational risk when they fail. The approach adapts to the specific demand patterns and risk profile of each environment.

How is success measured in an SRE engagement?

Success metrics are established at the outset and tracked through a scorecard approach. Key indicators include: the percentage of SLOs being met across critical services, reduction in alert noise, improvement in mean time to detection and resolution, reduction in repeat incidents, and team efficiency metrics. These are reported through a single consolidated view, giving leadership a clear and continuous picture of reliability performance against the objectives set at the start of the engagement.
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