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Issue #07 Technical January 8, 2026 8 min read

E-invoicing in Tunisia: how to integrate it into your business software

El Fatoora, the TEIF format, electronic signature, submission to TTN: how electronic invoicing actually works in Tunisia, and how to plug it into your management software to automate it — with no double entry and no change to your habits.

OS

OCEAN SOFT

Published on January 8, 2026

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4

technical steps: creation → signature → submission → TTN acknowledgement

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double entry when invoicing is integrated into your business software

9 min read

Shipping a SaaS pilot in 4 to 8 weeks: the method

Six months to a first deliverable is yesterday's pace. In 2026, an operational SaaS pilot ships in 4 to 8 weeks — provided you scope the right perimeter, start...

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The topics we cover

Six structural axes to understand the AI SaaS industry and build products that last.

RAG & knowledge

Hybrid embeddings, re-ranking, continuous evaluation. The information pipeline that grounds LLMs in your data.

Agents in production

Narrow scope, human-in-the-loop, end-to-end observability. What holds up beyond the demo.

Sovereignty & GDPR

INPDP, GDPR, AI Act, EU and sovereign hosting. Why compliance precedes code.

Pricing & business model

Usage-based, outcome-based, hybrid. How to bill for value when marginal cost is variable.

Architecture & infra

Stacks, model choices, monitoring, GPU costs. Technical decisions that scale.

Field reports

Pilots, rollouts, post-mortems. What works, what fails, and why.

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