1. Object and form of provision
   1. Software: Nautos is an application to support processes in the management of technical regulations and documents.
   2. Operating model: The application is provided as a “software-as-a-service”(SaaS) which is run and hosted on a server belonging to the licensor or a third party contracted by the licensor.
   3. Basic scope: The basic scope includes the features described below. The provision of metadata, additional software modules and documents is not part of the basic scope and can be ordered separately.
   4. On-premises (historical): The Intranet (on-premises software) module is no longer available for new customers. The licensor provides the necessary installation packets to the customer to be run on their system. Technical requirements (system requirements) are specified separately.
2. “Nautos Basic” scope of services
   Nautos Basic provides the basic functionality of the application and includes the following features.
   1. Search and results processing: Functions for searching within the available metadata, including displaying, annotating, marking and exporting search results.
   2. Favourites and watch list: Option to structure documents in favourites folders and manage personal watch list items. The export function includes saved-folder structures and the hit lists they contain
   3. Monitoring and automatic data updates: If changes are made to the records that are in the favourites, a notification is sent as part of the respective monitoring run.
   4. Company data (basic): Create and maintain your own (company) records. Copying of records without automatic transfer of successor and reference structures.
   5. Documents: Linking and displaying of documents.
   6. Managing users and rights: Role-based authorization and management system for users, user groups and sites. Option to activate user accounts for a limited period of time by setting a validity date.
   7. Access methods: The following login procedures are supported:
      ● Username/password
      ● IP login
      ● Single Sign-On (via the Single Sign-On (SSO) module that can be ordered separately).
   8. Usage statistics (basic): Provision of basic analyses of document access and/or login processes.
   9. Licence management: Control of access rights to metadata and documents in accordance with the licence packages assigned to the customer.
   10. Order management (basic): Internal requesting and acquiring of documents via the software application.
   11. Notification centre: Centralized display and management of system-side notifications within the application, including marking of notifications and direct access to associated content.
3. “Nautos Pro” scope of services
   Nautos Pro includes all the features of Nautos Basic and adds the following functional areas
   1. Document stamp (watermarks/annotations): Create and apply configurable document stamps based on metadata, user information or free text.
      Features:
      ● Configuration and management of stamps and annotations.
      ● Integration of metadata fields, user reference or company-specific information.
      ●Option to restrict stamp configurations to defined document quantities using saved search criteria.
      ● Preview of the configured stamp.
      ● Automatic application of the stamp when printing supported PDF documents (also in conjunction with the Online hosting module).
      ●Integration of additional client-specific fields in the stamp configuration.
   2. Deeplinks & link management: Creation of targeted links within the system.
      Features:
      ● Direct links to search results based on metadata criteria.
      ● Direct links to favourites folders.
      ● Use of all available metadata fields; exclusions are possible.
      ● Use of combinable search logics (e.g. filter and combination criteria)
   3. Advanced group and role management: Additional options for structuring user and authorization concepts.
      Features:
      ● Creation of dynamic user lists for creating groups based on user properties.
      ● Use of combinable criteria (e.g. site, department, etc.).
      ● Use of logical links between criteria (e.g. AND/OR).
      ● Extended role management with configurable rights based on a customizable standard role.
   4. Customer fields Pro (additional fields): Client-specific expansion of the metadata collection with additional fields.
      Features:
      ● Up to 25 additional fields per tenant to supplement the metadata model.
      ● Use of the fields for displaying, searching, structuring and exporting metadata.
      ● Use of additional fields within saved search templates and dynamic search queries.
      ● Import/export of the additional fields (e.g. via CSV files).
      ● Record of changes (time and user) for maintained additional fields.
      ● Support for different field types (e.g. text, number, date).
      ● Option to maintain release statuses or individual labelling as part of company-specific processes.
      ● Display of system-side references, e.g. to display citations (“is cited”).
      ● Defined document owners are automatic notified in the event of changes to release statuses within company-specific metadata.
      ● Option to assign a document owner and define check and reminder intervals to support the regular checking of company-owned records, including automated notifications.
      ● Option to create and manage hierarchical classification structures for structuring proprietary records.
   5. Ordering Pro: Ordering will be expanded to include functions for more extensive procurement processes.
      Features:
      ● Multiple assignment of customer numbers to a tenant for joint display of the purchase history.
      ● Consolidated presentation of the relevant acquisition histories.
      ● Utilization of multi-stage internal approval processes.
      ● Option to restrict the visibility of order processes based on users and groups.
      ● Notification of order processes relevant to the respective group.
   6. Company data – successor: Extended functions for managing company-owned records.
      Features:
      ● Duplicate existing company records for creation of new records.
      ● Optional transfer of existing field contents.
      ● Set predecessor/successor relationships between records.
      ● Version history expanded for traceability of updates.
4. Nautos additional modules (optional)
   1. Single Sign-On (SSO): The Single Sign-On (SSO) module extends the authentication options in Nautos to include access via external identity providers (IdP).
      It enables users to log in to Nautos with existing company accounts without having to maintain separate access data.
      Common SAML-based procedures (e.g. SAML 2.0, Shibboleth) are supported.
      Features:
      ● Setup and management of external identity providers by the customer.
      ● Automated authentication via the respective IdP at each login.
      ● Assignment and management of user attributes and role assignments as part of the SSO process.
      ● Recording of login processes.
      ● Support for automatic certificate change.
      The customer is responsible for the provision, configuration and security of the identity provider used.
   2. Online hosting (associated with this is the current additional terms and condition relating to online storage, available at https://www.dinmedia.de/en/general-terms-and-conditions-it): The Online Hosting module extends Nautos with the option of saving customer documents within the application and linking them to metadata records.
      The module is used for the centralized storage, management and display of documents that the customer enters into the system themselves.
      Features:
      ● Upload single or multiple files to a hosting directory operated by the licensor.
      ● Assignment of uploaded files to existing records in Nautos.
      ● Maintenance and editing of document-related metadata in connection with hosting files, both for uploads and for existing document links.
      ● Management, renaming and deletion of own hosting files via the application.
      ● Calling up hosting files within the application or via the Nautos viewer.
      ● Use of the document stamp stored in the tenant when printing hosted PDF files (in conjunction with product variant Nautos Pro).
      ● Provision of one dedicated hosting storage space per tenant (standard: 500 GB), expandable by agreement.
      ● Regular backup of redundant data by the licensor.
      The hosting storage can only be used within the application. External or cross-tenant access is not provided. The customer is responsible for checking the content and legal admissibility of the files uploaded by said customer.
   3. ReqIF converter: The ReqIF converter module enables the export of selected content from Nautos to the standardized ReqIF (Requirements Interchange Format) format in accordance with OMG 1.3 and DIN DKE Spec 99200 - ReqIF interpretation for public standards. The underlying data model is available at GitHub - DIN DKE Spec 99200.
      The converter is used for the cross-system processing of normative content in third-party systems (e.g. requirements or development platforms).
      Features:
      ● Automated conversion of supported documents and records into the format .reqifz (ZIP archive).
      ● Labelling of convertible records in Nautos.
      ● Provision of the converted files in the download area of the application.
      ● Support for the DIN, DIN EN and DIN EN ISO collection families.
      ● Automatic pre-classification of text-based content according to modal forms of obligation (“should”, “must”, “can”, etc.).
      Restrictions:
      ● Graphical content, tables or complex sentence structures cannot be fully analysed automatically.
      ● The customer is responsible for the validation and technical post-processing of the conversion results.
      ​​​​​​​● The ReqIF files generated by the licensor are not stored permanently after provision.
   4. API Metadata: The API Metadata module provides program-controlled access to the metadata search in Nautos.
      It enables customers to execute defined search queries via a programming interface (REST API) and process the results automatically.
      Features:
      ● Provision of individual API access for the tenant.
      ● Access to metadata records within the scope of customer-specific access rights.
      ● Query parameters for filtering, sorting, paging and output in JSON format.
      ● Update of metadata similar to that of the data updates in Nautos Online.
      ● Regular provision of technical documentation regarding field designations and parameters.
      ● Limitation of request frequency and scope to ensure system stability.
      The module does not include the retrieval or provision of tenant-specific content such as company data, user data or documents.
   5. Intranet (on-premises software): The Intranet module is a locally installable version of Nautos for customer-hosted IT infrastructures.
      It is no longer sold to new customers.
      Existing customers will continue to receive technical support and security updates as part of existing contracts.
      The system requirements specified in the respective offer apply for its operation.
5. Validity of the IT GTC
   In addition, the provisions of the IT GTC apply, available at https://www.dinmedia.de/en/general-terms-and-conditions-it.

Annex Service Description Software - Nautos as of: 16 February 2026