AI-Driven Modernization: Overcoming Tech Debt in Financial Services

Financial services organizations—banks, insurers, and asset managers—are at a pivotal crossroads. Decades of incremental technology investments have left many with a tangled web of legacy systems, siloed data, and mounting technical debt. In fact, global estimates put the accumulated tech debt across major enterprises at up to $2 trillion, with financial services bearing a disproportionate share. This burden is more than a technical liability; it’s a strategic threat that hinders innovation, operational efficiency, and the ability to deliver secure, personalized experiences at scale.

The Five Debts Hindering AI Adoption and Digital Transformation

Through extensive industry engagement and executive roundtables, five critical forms of “debt” have been identified as the primary barriers to AI-driven modernization in financial services:

  1. Technology Debt: Outdated core systems and fragmented architectures slow innovation and increase risk.
  2. Data Debt: Poor data quality, siloed information, and lack of governance hinder AI adoption and regulatory compliance.
  3. Process Debt: Manual, paper-based, or inconsistent processes limit scalability and efficiency.
  4. Skills Debt: A shortage of AI and data talent impedes the ability to implement and scale new solutions.
  5. Cultural Debt: Resistance to change and a lack of an “AI mindset” can stall transformation before it begins.

Addressing these debts holistically is essential for rapid, sustainable AI value creation. Publicis Sapient’s work with leading institutions, such as Deutsche Bank, demonstrates how tackling these debts—by building AI/ML catalogs, modernizing data infrastructure, and driving new business models—lays the foundation for enterprise-scale AI adoption.

Why AI Is the Game Changer

AI is not just another tool in the modernization toolkit—it is the catalyst capable of dismantling even the most persistent forms of tech debt. Over 80% of senior executives in financial services believe AI is the breakthrough needed to overcome entrenched technical debt. However, technology alone is not enough. Success demands a shift in mindset, delivery models, and operating architecture.

The Rise of Services-as-Software and AI-Led Service Models

A key insight from recent research is the emergence of “services-as-software”—a new paradigm where technology, not just people, delivers services. For financial services, this shift is critical. Traditional IT services often focus on maintaining legacy systems rather than driving transformation. AI-led service models, by contrast, enable:

Three in four enterprise leaders now expect a pivot from staff augmentation to services-as-software, and 71% are ready to switch providers for better AI execution and leadership. The message is clear: financial institutions that fail to embrace AI-driven modernization risk being left behind.

AI in Action: Modernizing Legacy Systems and Streamlining Compliance

AI-driven modernization is already delivering measurable impact across the financial services value chain:

Delivering Hyper-Personalized Experiences at Scale

Customer expectations in financial services have never been higher. AI enables hyper-personalization—tailoring products, services, and interactions to individual needs and behaviors. Banks and insurers are deploying AI-powered recommendation engines, proactive service bots, and omnichannel experiences that build trust and loyalty. These innovations require robust data strategies and secure, compliant platforms.

Overcoming Barriers: From Experimentation to Enterprise-Scale AI

Despite the promise of AI, many financial institutions remain stuck in the experimentation phase. Key barriers include:

To move from pilots to production, financial services leaders must:

Sapient Slingshot: Accelerating Modernization with AI

Publicis Sapient’s proprietary platform, Sapient Slingshot, is purpose-built to address the unique challenges of financial services modernization. Slingshot automates and accelerates complex software processes—from prototyping and code generation to testing, deployment, and maintenance. It embeds industry and technical expertise to modernize outdated code and streamline new development, supporting every stage of the software development lifecycle. With Slingshot, financial institutions can achieve:

Real-World Impact: Case Studies

The Path Forward: Building Future-Ready Financial Services

The future belongs to financial institutions that can break free from tech debt and harness AI as a driver of innovation, efficiency, and customer value. By addressing technology, data, process, skills, and cultural debts in tandem, banks, insurers, and asset managers can move from incremental change to enterprise-scale transformation.

Publicis Sapient stands as a trusted partner for this journey—combining deep industry expertise, proven frameworks, and a relentless focus on outcomes. With AI as the catalyst, financial services organizations can rewrite the rules of modernization and lead the next wave of industry innovation.

Ready to smash through tech debt? Let’s talk about your modernization journey.