222 deploy nextcloud on cce (#266)

Author: MJZLOTR

docs/blueprints/by-use-case/sovereignty/_category_.json

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+{
+  "label": "Sovereignty",
+  "link": {
+    "type": "doc",
+    "id": "sovereignty"
+  }
+}

docs/blueprints/by-use-case/sovereignty/index.md

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+---
+id: sovereignty
+title: Sovereignty
+---
+
+# Sovereignty
+
+The Sovereignty blueprints demonstrate how to design and deploy cloud architectures and applications on Open Telekom Cloud that give you complete authority over data, operations and underlying technology. Leveraging Open Telekom Cloud’s exclusively european data centers and its OpenStack-based foundation, each blueprint shows how to:
+
+* Localize all compute and storage resources in GDPR-compliant EU regions, guaranteeing precise control over data residency
+* Employ customer-managed encryption keys and confidential-computing enclaves to secure data at rest and in transit without vendor-held backdoors
+* Leverage OpenStack APIs and Kubernetes-based container orchestration for fully portable workloads, consistent deployment pipelines and frictionless migration options
+
+Following our reference blueprints, organizations can confidently meet GDPR, GAIA-X and industry-specific mandates, avoid vendor lock-in and sustain control over every layer of their environment while taking advantage of the performance, scalability and availability of a leading European cloud platform as Open Telekom Cloud.

docs/blueprints/by-use-case/sovereignty/nextcloud/1_introduction-to-nextcloud.md

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+---
+id: introduction-to-nextcloud
+title: Introduction to Nextcloud
+tags: [nextcloud,storage,office,collaboration,sovereignty]
+---
+
+# Introduction to Nextcloud
+
+[Nextcloud](https://nextcloud.com/) is an open-source collaboration and file-sharing platform that organizations can deploy on-premises or in a private cloud. It combines secure file storage and synchronization with integrated groupware calendar, contacts and email, so teams can manage documents and communications from a single, self-hosted environment. By retaining full control over infrastructure and data location, Nextcloud helps maintain privacy, security and regulatory compliance.
+
+## Features
+
+- **[Nextcloud Files](https://nextcloud.com/files/)**: Offers seamless file sharing and synchronization across devices, ensuring that users always have access to their latest documents.
+- **[Nextcloud Office](https://nextcloud.com/office/)**: Provides an integrated office suite that allows real-time collaborative editing of documents.
+- **[Nextcloud Talk](https://nextcloud.com/talk/)**: Facilitates secure video calls, chat, and web conferences, ensuring that communication remains private and compliant with data security standards.
+- **[Nextcloud Groupware](https://nextcloud.com/groupware/)**: Offers easy-to-use web mail, calendaring, and contacts that help your team get things done quicker and easier, integrated with Nextcloud Files.
+
+## Benefits
+
+By deploying Nextcloud on-premises, organizations maintain complete control over their data—an essential requirement for meeting European mandates like the [General Data Protection Regulation](https://gdpr.eu/what-is-gdpr/) (GDPR). The platform’s comprehensive security toolkit, which includes both server-side and end-to-end encryption alongside flexible identity and access management, helps guard against unauthorized access and breaches. At the same time, Nextcloud’s modular, scalable architecture lets businesses expand capacity, integrate new services and fine-tune performance as their needs evolve, delivering an adaptable solution that remains cost-efficient over time.
+
+:::tip[See Also]
+
+- [GDPR.eu: Complete Guide to GDPR Compliance](https://gdpr.eu/)
+- [What is considered personal data under the EU GDPR?](https://gdpr.eu/eu-gdpr-personal-data/)
+- [Are you ready for the GDPR? GDPR checklist for data controllers](https://gdpr.eu/checklist/)
+
+:::
+
+## Data and Tech Sovereignty
+
+Data and technology sovereignty is non-negotiable for European organizations: it guarantees exclusive authority over data, prevents vendor lock-in and ensures compliance with regional regulations by keeping sensitive information under local jurisdiction. As digital services evolve, retaining full control of both data and infrastructure has become critical—relying on non-European providers can introduce legal uncertainties and expose assets to foreign authorities.
+
+In the current digital and political environment, the importance of cloud and tech sovereignty has grown significantly. For European companies, retaining control over their data and technology infrastructure is vital. Relying on non-European cloud solutions can lead to potential conflicts with local data protection laws and expose sensitive data to foreign authorities.
+
+Deploying Nextcloud on the Open Telekom Cloud aligns businesses with stringent European data-security mandates while delivering a scalable, high-performance cloud platform.
+
+Throughout this series, we’ll guide you through implementing a highly available Nextcloud deployment using Open Telekom Cloud services.
+
+:::tip See Also
+Alternatively you can deploy Nextcloud on Open Telekom Cloud via [Cloud Create](https://www.open-telekom-cloud.com/en/products-services/core-services/cloud-create), our multi-cloud management tool, and avoid the a daunting complexity related to infrastructure management. 
+
+*  [Nextcloud App in Cloud Create](https://docs.otc.t-systems.com/cloud-create/umn/service_catalogs/nextcloud.html)
+*  [How Nextcloud web application is modelled in TOSCA format](https://github.com/opentelekomcloud-blueprints/tosca-service-catalogs/blob/main/nextcloud/types.yml)
+:::