Use XML with confidence

Digital applications generate and process a large amount of structured information - often across system boundaries. XML (Extensible Markup Language) plays a central role here: the markup language serves as a global standard for the description, data transfer and storage of complex data structures.

XML is used regularly, particularly in applications that require a high level of integration - for example in web development, office documents or e-government. With its secure, GDPR-compliant cloud infrastructure, STACKIT offers the right platform for the confident operation of XML-based applications. Whether processing SVG graphics, creating configuration files or structured documents: find out how you can reliably bring your XML processes into the cloud with STACKIT.

• Attribute: Additional information in an element. Example: <product id="1234″>.
• Cloud / cloud platform: STACKIT provides IT resources such as servers, storage or databases via the internet. XML-based applications can be operated securely and flexibly there.
• File / document: In relation to XML, this refers to a structured text file that stores data according to defined rules. It can be both machine-readable and comprehensible for humans.
• GDPR: The General Data Protection Regulation (applicable throughout the EU). STACKIT fully complies with its requirements by operating in certified data centers in Germany and Austria.
• Configuration file: In many applications, settings are saved in an XML file. These files usually contain structured information about paths, services or parameters.
• Markup language (markup languages): A language that adds structure and meaning to text using so-called tags. Markup languages include HTML and XML.
• Parser: A software module that analyzes an XML file and provides the information it contains for applications.
• Schema / XSD (XML Schema Definition): A definition that describes the composition and permitted components of an XML document. It specifies rules for elements, attributes and their relationships.
• STACKIT: The Schwarz Group's European cloud platform that provides sovereign IT infrastructure and platform services for companies - with a focus on data protection, security and flexibility.
• SVG (Scalable Vector Graphics): An XML-based file format for describing two-dimensional graphics.
• Tags: Tags are central components of the XML markup language. They structure content, describe its meaning and enable its use on the web, in the processing of code and the transfer of structured information. In XML, each tag is a clearly defined unit that can be evaluated with the help of schemas or parsers.
• XML (Extensible Markup Language): A standardized markup language for representing structured information in text form. It is based on an open syntax with self-defined tags and is standardized by W3C, among others.
• XPath: A query language that can be used to select specific parts of an XML document - such as certain elements or attributes.
• XSLT (Extensible Stylesheet Language Transformations): An XML-based format for transforming XML documents into other XML formats or HTML. It is used to filter, transform or display content.

For decades, XML has been regarded as the central basis for structured data exchange - both within individual applications and across system boundaries. Thanks to its clear, open code, XML is ideal for many integration scenarios. Its strength lies in the combination of clarity, openness and extensibility:

Extensible format: XML can be extended as required. New elements or attributes can be inserted without disrupting existing structures - a major advantage when further developing your products or interfaces.

Open schema: By using XSD or DTD, fixed rules can be defined as to how a document may be structured. This helps with validation and error prevention.

Broad support: Almost all platforms, programming languages and applications - from Microsoft Office to Google Cloud - use XML for data import, export or configuration.

Long-term readability: XML is platform-independent, standardized and can be saved as plain text. This also makes it suitable for long-lasting document archives.

User-centered development: With the help of stylesheets (e.g. XSLT), the content can be displayed or transformed in a targeted manner - depending on the target system or use case.

Whether as a transport format on the Internet, as a configuration file in software projects or as a structure provider for web content: XML offers a standardized, reliable model for describing digital information. You can also add a new element at any time - without changing existing structures.

XML is also ideally suited for data migrations between different systems and technologies. In migration projects, existing information can be reliably transferred to new software or cloud environments, as XML is a universal exchange format. Even when integrating external partners or changing IT providers, the integrity of the data is maintained thanks to the standardized format.

An example: You operate an application for managing electronic invoices. You use XML files with specific schemas (e.g. XRechnung). In the STACKIT Cloud, you can set up validation-capable pipelines, store your files securely and archive them long-term - including backup and access protection.

A key area of application for XML is communication between systems - for example via web services and standardized interfaces (APIs). XML is the preferred transport format, especially for data exchange formats such as SOAP (Simple Object Access Protocol). Many older ERP, administration or industry applications also continue to rely on XML-based interfaces, which must be supported and operated securely in the long term.

STACKIT offers the right cloud environment for this: REST or SOAP APIs can be containerized, secured with API gateways and scaled as required. At the same time, the infrastructure allows the hosting of OpenAPI documentation, WSDL files and central data catalogs - all on a European, GDPR-compliant basis. The integration of additional services such as monitoring or access protection is easily possible.

This is a great help for companies that exchange data between partners, authorities or internal systems. XML therefore not only remains a proven data format, but also a stable anchor for modern, integration-capable cloud architectures - implemented on a platform that combines digital sovereignty, technical openness and long-term security.

Working with XML offers great flexibility, but also requires clear rules. The following recommendations will help you to use it successfully - especially in the cloud:

1. Clear structure with schema: use a clean schema (e.g. XSD) right from the start to validate your data. This helps to detect errors at an early stage and makes your application more robust.
2. Build content modularly: Use a separate XML file for reusable data. This allows content to be adapted and current versions to be integrated in a targeted manner - without having to recreate entire documents.
3. Use parsers in a targeted manner: Whether DOM, SAX or StAX - choose the appropriate XML parser depending on the use case. A memory-saving stream parser is recommended for large amounts of data.
4. Control access efficiently: Use STACKIT's own network segmentation and role-based assignment of rights to secure your XML services against unauthorized access - especially for confidential information.
5. Automate text processing: Using XSLT or XPath, you can specifically access the content and structure of your documents. This is useful for automated workflows - for example when converting formats.
6. Document file formats: Publish the structure of your XML file if it is used for exchange - for example via a publicly accessible repository. This makes integration easier for other products or partners.

Whether for the transfer of structured information on the Internet, the configuration of modern software or the presentation of content on your website: XML is and remains a central standard. Its clear composition, free extensibility and broad support from platforms such as Microsoft, Google and open source software make XML a reliable tool in the digital world.

XML thus offers a robust basis for web-based services and data-intensive applications. And STACKIT complements these strengths with its superior cloud services. Your XML files, documents and parser services are operated in compliance with GDPR, flexibly scaled and reliably protected - regardless of whether you are analyzing large volumes of data or connecting systems via interfaces.

Use the possibilities of a European cloud platform to map your XML processes securely, efficiently and sustainably.

What is XML and what is it used for?

XML (Extensible Markup Language) is a markup language for describing structured data in text form. It is used to store information in a machine-readable format and to exchange it between applications - for example in configuration files, Office documents, web services or when transferring data on the Internet.

Does STACKIT support the operation of XML-based applications?

Yes, XML processing can easily be run on STACKIT - for example by using your own parser, hosting XML databases or using containers with XML-based services. You benefit from a secure, scalable infrastructure with German data centers.

How secure is my XML data in the STACKIT cloud?

STACKIT stores your XML files and documents exclusively in ISO/IEC 27001-certified data centers in Germany and Austria. Access controls, network protection and encrypted transmission ensure maximum security.

Which formats can be combined with XML?

XML is often used together with XSD (schema definition), XSLT (transformation), XPath (query) or SVG (graphics). Many software products - such as Microsoft Office or Google Workspace - also use XML as an internal format.

Why is XML suitable for long-term archiving?

XML documents are text-based, platform-independent and easy to read. They can be versioned, checked and validated - properties that are ideal for structured storage and long-term retention.