The firm

A firm that puts AI to work, without losing control.

Ostenia advises executive teams, CIOs and business leaders on selecting, deploying and governing their AI agents. Our conviction: agentic AI is a leadership decision, not a technology project.

A subsidiary of DTS Conseil, an advisory firm specialising in information systems, data and AI strategy.

The partners

Three partners, one network.

A successful AI agent is a sound decision, a sound investment and a sound system. Every engagement brings all three together.

Abdoul SeckDecide

Abdoul DialloFund and measure

Thierry de LapasseBuild and secure

Strategy and transformation · Decide

Abdoul Seck

Co-founder and CEO

Make agentic AI a decision for the executive team – and see it through to results.

Computer engineer, former Executive Director at Deloitte and Associate Partner at EY.

More than twenty years leading transformations across Europe, Africa and the Middle East, working alongside CEOs, executive committees and CIOs.

Expertise

Information systems, data and AI strategy
IT master plans and roadmaps
AI architectures and platforms
Data governance
Sovereign cloud and cybersecurity
IT audit and financial modelling

Sectors Banking and insurance · Industry · Energy · Healthcare · Retail · Public sector

Finance and performance · Fund and measure

Abdoul Diallo

Co-founder and CFO

No agent goes live without a business case – or without measuring what it delivers.

Engineer and economist, specialising in audit and corporate finance.

More than twenty years of experience. Head of Logistics and Transport Services at the City of Paris, he also teaches economics and management, and advises executive teams on their business models and on financing their growth.

Expertise

Business models and value analysis
Growth financing strategy
Performance management
Audit and control
Operational transformation

Data and AI platforms · Build and secure

Thierry de Lapasse

Partner and COO

Agents that hold up in production: reliable, secure and compliant.

More than twenty years stabilising, securing and transforming business-critical data and AI platforms in banking, finance, energy and industry.

A former head of data teams and member of the leadership of major enterprise accounts, he has led build, run and support teams.

Expertise

Data and AI platforms: GCP, AWS, Azure, Databricks, Kubernetes, sovereign clouds
Resilience: business continuity and disaster recovery
Security and compliance: certified ISO 27001, ISO 27005 and EBIOS; ACPR requirements (French banking supervisor)
Data governance
DevSecOps and industrialisation of data services
Financial services: KYC, fraud prevention, payments

Sectors Banking and finance · Energy · Industry

Our principles

Four rules we apply to every engagement.

People decide

Every agent has an owner and clear limits. Decisions that commit the organisation remain human.

Vendor-independent

We sell no licences and no platforms. We recommend what is right for your situation.

Measure what matters

Quality, cost, speed, risk: every agent is evaluated before and after go-live.

The simplest thing that works

No agent where a simple rule will do. No demonstration without a next step.

The name

Ostenia, where intelligence rises.

The name brings together two roots. In German, Osten means the East, where the sun rises; in Latin, ostendere means to show, to bring to light. And it ends with ia, the French for AI.

Our logo splits the O in two. On the left, a solid line: the knowledge of your people. On the right, a network: the agents that put it to work. Between them, a golden dot: the idea that rises.

Abdoul Seck, Abdoul Diallo and Thierry de Lapasse

Meet a partner.

A one-hour conversation with the partner whose perspective matters most for your situation.

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