From Legacy Modernization to Autonomous Run

Enterprise transformation does not end at deployment. For many organizations, go-live is the point where a different kind of complexity begins: more dependencies, more releases, more signals to interpret and more risk that recurring issues will quietly erode the value of modernization. A modern build strategy without a modern run strategy leaves too much value exposed.

Publicis Sapient addresses that challenge through a connected platform model. Sapient Slingshot helps enterprises modernize legacy systems and accelerate software delivery. Sapient Sustain helps those live systems keep running, improving and staying resilient after launch. Together, they create a build-to-run approach in which modernization, AI activation and resilient operations reinforce one another across the full transformation lifecycle.

Modernization is only complete when systems perform in production

Many transformation programs are measured by code migration, release velocity or deployment milestones. Those outcomes matter, but they are not enough. Legacy fragility can persist after go-live in the form of recurring incidents, fragmented tooling, slow diagnosis and rising operational debt. Teams may ship faster, yet still spend too much time managing instability after release.

That is why modernization must be connected to long-term operational resilience. Slingshot helps enterprises move beyond fragile legacy architectures by accelerating software development and modernization across the full lifecycle from design through deployment. Sustain extends that value after go-live by acting as the run-state operational layer for live enterprise environments.

The result is a more complete transformation story: modernize what is holding the business back, accelerate delivery of better systems and then protect those gains with predictive, self-healing operations.

What Slingshot brings to the build side

Sapient Slingshot is positioned to help organizations modernize legacy systems and improve software delivery speed with AI-powered, agentic workflows. Within Publicis Sapient’s broader platform portfolio, its role is to reduce friction in the software development and modernization lifecycle so enterprises can move from brittle legacy estates toward more adaptable digital platforms.

For CIOs and transformation leaders, that means Slingshot is not just about writing code faster. It is about creating a more reliable foundation for change. Modernization can reduce technical fragility before launch by improving traceability, accelerating delivery and helping teams move away from outdated systems that constrain the business.

But even well-modernized environments still need a stronger run model once they are live. That is where Sustain becomes essential.

What Sustain brings after go-live

Sapient Sustain is the operational layer for autonomous IT operations. It is designed to help enterprises keep live systems running, detect issues early, automate known remediation paths and improve resilience over time without replacing existing ITSM, observability or infrastructure tools.

Instead of relying on people-heavy, reactive support alone, Sustain connects detection, diagnosis, remediation and learning into one operating model. It sits on top of the current environment and brings together telemetry, tickets, change records, service maps and business dependencies into shared operational context. That context helps teams and AI agents understand what changed, what is affected, what depends on it and what business impact is at stake.

With that foundation, Sustain supports a shift from reactive support to predictive and self-healing operations. Predictive models surface problems earlier so teams can intervene before users are affected. Self-healing workflows automate validated remediation for known, repeatable issues within defined guardrails. Over time, the platform learns from resolved incidents, helping reduce repeat failure classes and the hidden operational drag that comes from recurring workarounds and fragmented diagnosis.

How Slingshot and Sustain work better together

Slingshot and Sustain are strongest when viewed as connected layers of the same transformation lifecycle.

Slingshot helps reduce pre-launch fragility by modernizing legacy systems and accelerating delivery. Sustain helps reduce post-launch fragility by making live systems more resilient, more observable and less dependent on manual triage. One improves how systems are built and changed. The other improves how those systems are run and strengthened over time.

Together, they support a build-to-run model with four reinforcing advantages:
This connected model matters because modern enterprises do not experience build and run as separate realities. New releases, platform changes, integrations and business journeys all interact in production. Transformation value is protected only when delivery velocity and operational resilience evolve together.

A run model built for complex enterprise environments

Sustain is designed for the kinds of environments where post-launch instability has real business consequences: digital commerce platforms, multi-market enterprise estates and regulated industries where uptime alone is not enough. In these settings, enterprises need automation with control.

That is why Sustain emphasizes governed autonomy. Automated actions are designed to be traceable, explainable and aligned to enterprise guardrails, approval policies and audit requirements. Known, lower-risk issues can be automated, while higher-risk or higher-judgment situations remain under human oversight. Engineers are not removed from the system. Their focus shifts from repetitive triage toward oversight, exception handling, policy tuning and continuous improvement.

This makes Sustain more than a point solution for incident response. It is a connected operational layer designed to help enterprises scale resilience without rip-and-replace disruption.

Measurable outcomes across the run state

Publicis Sapient ties Sustain to outcomes that matter at the executive level: lower operational cost, stronger uptime, faster resolution and fewer repeat incidents. Reported examples include a global automotive manufacturer achieving a 40% reduction in operational costs, a 62%+ same-day issue resolution rate and 99.99% platform uptime, as well as a global beauty leader achieving a 35% reduction in operational cost and a 50% improvement in mean time to repair across a large digital commerce environment.

These examples point to a larger shift in how transformation success should be measured. Instead of focusing only on ticket throughput or response time, leaders can evaluate resilience outcomes such as repeat-incident reduction, autonomous resolution, outage prevention, SLA-risk prediction, operational debt reduction and protection of revenue-critical journeys.

From modernization to autonomous run

The next phase of enterprise transformation is not just about building modern systems. It is about building systems that can continue to adapt, perform and improve under real-world conditions.

Sapient Slingshot and Sapient Sustain support that progression. Slingshot helps modernize legacy estates and accelerate software delivery. Sustain helps live environments anticipate issues, automate known fixes and learn continuously after go-live. Together, they create a model in which modernization does not stop at deployment and operations do not remain trapped in reactive support.

For enterprise leaders, that means a clearer path from legacy modernization to autonomous run: transform the foundation, accelerate delivery, protect value in production and reduce fragility on both sides of launch.