> For the complete documentation index, see [llms.txt](https://frameworks.greendealdata.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://frameworks.greendealdata.eu/10-technical-building-blocks.md).

# Introduction

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*This section might be updated based on the latest developments in the SAGE consortium, specifically considering WP2, WP3, WP4, and WP5 working groups. Since the project runs till 2028, the final GDDS deliverable is expected to have additional information on these sections.*
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Technical capabilities form the foundation for operating and scaling the Green Deal Data Space (GDDS). Their purpose is to ensure secure, interoperable, and value-driven data exchange between diverse participants across sectors and Member States. 

The objective of these technical areas is to: 

* Identify essential capabilities required for GDDS implementation. 
* Provide clear references to standards and specifications that can be adopted or adapted by participants. 
* Enable technical interoperability through shared approaches, reducing integration costs and ensuring that different systems, platforms, and tools can work together seamlessly. 

The GDDS will draw on widely recognised open standards, specifications, and reference architectures. Leveraging these allows participants to make informed technical choices while ensuring compatibility across the ecosystem. This also promotes reusability of solutions, easier onboarding, and faster scaling. 

Technical capabilities are grouped into three interconnected areas: 

1. Data Interoperability 

* Semantic models, data formats, and APIs for consistent data exchange. 
* Provenance and traceability mechanisms to verify the source, history, and integrity of shared data. 

2. Data Sovereignty and Trust 

* Identity and credential management for participants and assets. 
* Mechanisms for establishing trust, including authentication, authorisation, and policy-based access & usage control. 

3. Data Value Creation Enablers 

* Tools and services for data/service discovery, matchmaking, and registration. 
* Capabilities to support value-added services, analytics, and innovation within the GDDS. 

By aligning these technical frameworks with the governance, legal, and operational layers, GDDS aims to deliver a trusted and interoperable data space that fosters innovation while safeguarding sovereignty, compliance, and shared values.