Berlin's Digital Archive Problem: The Hidden Scale of Duplicate Images Clogging City Systems

Berlin's public administration is drowning in copies of itself. An internal review process underway across several Senatsverwaltungen since January 2026 has found that duplicate image files — the same photograph stored two, three, sometimes a dozen times across different departments — account for a substantial share of the city's ballooning digital storage overhead. The problem is not glamorous, but the numbers are serious.

Storage contracts for Berlin's central IT infrastructure, managed largely through the Berliner Senatsverwaltung für Inneres und Sport and its subsidiary IT-Dienstleistungszentrum Berlin (ITDZ), have climbed year on year since 2019. The ITDZ, headquartered on Berliner Straße in Tempelhof, manages data infrastructure for roughly 80,000 public-sector workstations across the capital. According to budget documents published by the Abgeordnetenhaus in March 2026, the city's total IT expenditure for fiscal year 2025 exceeded 420 million euros — a figure that includes licensing, hardware, and cloud storage agreements.

Duplicate image replacement — the systematic process of identifying redundant visual files, consolidating them into a single master copy, and deleting the rest — sits at the centre of an efficiency push that the SPD-led coalition has quietly embedded in its 2025-2028 digitalisation roadmap. The logic is straightforward: every unnecessary copy costs money to store, back up, and secure.

What the Numbers Actually Show

The scale becomes clearer when you look at specific agencies. The Berliner Feuerwehr, which operates from its main coordination centre on Voltairestraße in Mitte, processes thousands of incident photographs annually for training, insurance, and public communications purposes. Sources familiar with the digitalisation audit — a process described in February 2026 budget committee minutes — indicated that image-related redundancy is a recognised problem across emergency services IT generally, though department-specific figures have not been published.

Across European municipal governments, studies by organisations including the European Commission's Interoperability Centre have found that between 25 and 40 percent of stored files in large public administrations are exact or near-exact duplicates. Applied conservatively to Berlin's context, where the city holds data across more than 200 distinct administrative bodies, the implied waste is substantial. Cloud storage at enterprise rates currently runs between 0.02 and 0.05 euros per gigabyte per month for the volume contracts a city of Berlin's size would negotiate. Even modest deduplication gains across a system holding multiple petabytes translate to six-figure annual savings.

Private-sector Berlin has moved faster. Companies based in the Startup Campus Berlin at Tempelhof Feld and along the tech corridor in Prenzlauer Berg have adopted automated deduplication tools — products from companies including Cloudinary and ImageKit — as standard workflow practice. The contrast with public administration, where procurement cycles run 18 to 36 months and legacy systems resist integration, is stark.

What Comes Next for the City

The ITDZ is expected to present a consolidated deduplication strategy to the Senatsverwaltung für Digitalisierung und Verwaltungsmodernisierung by the end of the third quarter of 2026. The strategy will reportedly include a phased rollout across priority agencies, beginning with the Senatsverwaltung für Stadtentwicklung, Bauen und Wohnen — a department that holds large volumes of planning photographs, architectural renderings, and georeferenced imagery for the city's extensive housing programs.

For Berlin residents, the practical consequence is indirect but real. Every euro saved on redundant storage is a euro theoretically available for services. In a city where the housing construction subsidy program Wohnraumförderungsprogramm Berlin is perpetually underfunded relative to demand, and where BVG has been seeking additional capital for its U-Bahn Line 3 extension planning, administrative efficiency arguments carry political weight.

The immediate task for city IT teams is unglamorous: run deduplication scans, establish a single-source-of-truth repository for shared assets, and update procurement contracts before their next renewal cycles. The Senatsverwaltung für Finanzen has set a soft deadline of December 2026 for initial reporting. Whether the coalition treats that deadline as binding will say something about how seriously Berlin's digital administration takes its own reform agenda.