Meet Donnerstag.ai at ReThink Accounting 2026, 20–21 April

Meet Donnerstag.ai at ReThink Accounting 2026, 20–21 April

Trust

Trust by architecture, not by promise.

Audit-readiness, GoBD/IFRS/SOX coverage, EU residency, ISO 27001, Zero Training Policy all consequences of how the Reconciliation Layer is built.
The detail your security, audit, and tax teams need lives in the Trust Center Package.

ISO 27001

EU hosted

Zero Training

Audit-Ready by Design

100% line-item · immutable trail

Compliance Coverage

GoBD · IFRS · SOX · BEPS

Security Architecture

AES-256 · TLS 1.3 · SSO · SCIM

EU Data Residency

Frankfurt · SCCs pre-executed

Zero Training Policy

Customer data never used to train

Deployment Flexibility

SaaS · Single-Tenant · BYOC · On-Prem

Trust Center Package

Everything your security and legal teams need

The Trust Center Package collects the documentation typically requested in enterprise security and procurement reviews. Request once, share with your team. Updated quarterly.

Single request, full package: ISO 27001 certificate, DPA + SCCs, sub-processor list, penetration test summary, SOC 2 Type II readiness letter, architecture brief, EU AI Act readiness documentation, Customer Data Lifecycle and Incident Response details.

ISO 27001 Certificate

Full certificate + audit scope

DPA + Standard Contractual Clauses

EU 2021 SCCs · pre-executed

Sub-Processor List

Updated quarterly

Penetration Test Summary

Annual 3rd-party test · executive summary

Architecture Brief

Technical document for IT/Audit

EU AI Act Readiness Documentation

Classification posture · obligations mapping

Customer Data Lifecycle & Incident Response

Retention · deletion · DSGVO Art. 15–22 · IR posture

Section 01 · Pillar 03 anchor

Audit-readiness as a byproduct, not an extra task

Every matching decision logged immutably — rule, model, timestamp, user, confidence, rationale. Sampling is structurally replaced with 100% line-item coverage. The audit evidence the auditor receives is pre-populated, immutable, and at the line item — sampling becomes a validation exercise, not a coverage exercise.

100%

Line-item coverage

Every match populated, every exception raised on the day it appears. No sampling, no post-hoc reconstruction.

−30 to −50%

Year-end audit time

Continuous monitoring at the transaction level stands in for sampled audits. Auditor receives evidence on day one, not last day.

Big-4 ready

External-auditor walk-through

Walk-through calls with Big-4 engagement teams are routine — including for US-listed customers in your industry profile.

Full audit walk-through · ICFR control description · ISO 27001 certificate available in the Trust Center Package →

Compliance posture

GoBD, IFRS, SOX, BEPS — one integrated audit trail

The reconciliation engine produces compliance evidence as a byproduct. The full standards mapping, certificates and documentation packages live in the Trust Center Package.

Standard

Where it applies

Status

ISO 27001

Information Security Management System · third-party audited

Certified

GoBD

Ordnungsmäßigkeit · Nachvollziehbarkeit · Unveränderbarkeit · platform layer

Covered

IFRS 10 · HGB §297

Group consolidation · IC elimination evidence

Covered

SOX Sec. 404

ICFR posture · deterministic-first matching · immutable trail

Covered

BEPS Action 13 · §90 AO

Transfer-pricing documentation · transaction-level evidence

Covered

GDPR · DPA + SCCs

EU 2021 Standard Contractual Clauses · pre-executed

Pre-executed

EU AI Act

High-risk readiness documentation · positioned to meet obligations on classification

Documented

Certificates, control description, audit-scope details and compliance attestations available in the Trust Center Package →

Security architecture

Enterprise-grade security from day one

Encryption, identity, and continuous validation built in — not retrofitted. The detail and the third-party reports live in the Trust Center Package.

Data protection & encryption

Production data encrypted at rest with AES-256-GCM via Cloud KMS. Data in transit uses TLS 1.3 with HSTS enforced on every endpoint. DLP content scanning runs before any model invocation.

AES-256-GCM

TLS 1.3

Cloud KMS

DLP at inference

Access control & identity

RBAC at workspace and Flow level. SSO via SAML 2.0 / OIDC with native Azure AD, Okta, Google Workspace integration. SCIM provisioning end-to-end. Phishing-resistant MFA required for every user.

SAML 2.0 · OIDC

SCIM

RBAC per RECON

WebAuthn · Passkey

Penetration testing & logging

Annual third-party penetration test with summary report. Immutable audit logging captures every system event, every model interaction, every administrative action — retrievable on demand.

Annual 3rd-party test

Immutable logging

Summary in Package

Data sovereignty

Data stays in the EU. By default. By architecture.

Production data hosted exclusively in europe-west3 (Frankfurt) — no cross-border transfer under standard configuration. Backup and disaster-recovery infrastructure are also EU-resident.

Frankfurt · europe-west3 by default

All production data hosted in the EU. Standard configuration involves no cross-border data transfer.

Dedicated EU enclave option

For customers with data-localisation mandates: a dedicated EU processing enclave with full tenant isolation.

SCCs & DPA pre-executed

EU 2021 Standard Contractual Clauses ready to sign. Works Council / Betriebsrat consultation supported with pre-prepared documentation.

Never used for training

Customer data is never used to train, fine-tune, or improve any model — own or third-party. Contractual in the DPA.

Tenant-isolated inference

No cross-tenant learning. Architecturally enforced isolation between customers, validated by the same audit log that covers reconciliation matches.

Auditable model invocations

Every model call logged — when, by whom, on what data. Available to internal audit and external auditors under NDA.

Strategic differentiation anchor

Your data is never used to train models.

Zero Training Policy — contractually guaranteed in the DPA, applied to all third-party LLM providers. Tenant-scoped inference, no cross-tenant learning, architecturally enforced.

Deployment models

Four deployment models. One Layer.

From SaaS to fully air-gapped on-premise. Scoped to your security and operational requirements. Detail and architecture brief in the Trust Center Package.

Multi-Tenant SaaS

Default deployment

Shared infrastructure with full tenant isolation. The fastest path to value.

4–6 wk go-live

per Flow

Single-Tenant SaaS

Dedicated infrastructure

For customers with isolation requirements. Same architecture, isolated stack.

99.95% SLA

Dedicated

BYOC · Bring Your Own Cloud

In your cloud account

Deploy the platform into your own GCP, Azure, or AWS environment. Your data never leaves your cloud.

GCP

Azure

AWS

On-Premise

Air-gap capable

Helm Chart deployment for the most regulated environments. No cloud connectivity required.

Helm

Air-gap

Regulated

Validate the business case on your data

Quantify on your data.

Real data of one month of your choice. We configure and implement the first RECON, review findings, measure match-rate, money-at-risk, close acceleration potential, and audit exposure on real transactions.

Donnerstag.ai

English

ISO 27001

EU HOSTED

ZERO TRAINING

©

2026

Donnerstag.ai Technologies GmbH

Donnerstag.ai

English

ISO 27001

EU HOSTED

ZERO TRAINING

©

2026

Donnerstag.ai Technologies GmbH

ISO 27001

EU HOSTED

ZERO TRAINING

©

2026

Donnerstag.ai Technologies GmbH