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+# DEV Research footer
+
+## Overview
+
+| Design System |                                         Component                                         | Comment                                                                                                                                                                               |
+| ------------- |:-----------------------------------------------------------------------------------------:|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [Atlassian Design System](https://bitbucket.org/atlassian/atlaskit/src/master/) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [Bootstrap](https://github.com/twbs/bootstrap) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [GitHub Primer](https://github.com/primer/css) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [GitLab Pajamas](https://gitlab.com/gitlab-org/gitlab-services/design.gitlab.com) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [HP Enterprise Grommet](https://github.com/grommet/grommet) |                          [footer](https://v2.grommet.io/footer)                           | Simple container with alignment, padding, fill... Does not offer any layout like columns.                                                                                             |
+| [IBM Carbon](https://github.com/carbon-design-system/carbon) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [Material UI](https://github.com/mui/material-ui) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [MongoDB.design](https://github.com/mongodb/design) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [Porsche Design System](https://github.com/porsche-design-system/porsche-design-system) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [SBB Lyne](https://github.com/lyne-design-system/lyne-components) |   [footer](https://lyne-storybook.app.sbb.ch/?path=/docs/elements-sbb-footer--docs)  | Footer is a simple wrapper that provides a slot to add any layouts and components. Nice: the footer is often displayed with the sbb-clock component (a stylised, animated station clock). |
+| [Shopify Polaris](https://github.com/Shopify/polaris) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [SNCF Design System](https://gitlab.com/SNCF/wcs) |                                             ❌                                             | --                                                                                                                                                                                    |
+| [Telefonica Mistica](https://github.com/Telefonica/mistica-web) |                                             ❌                                             |                                                                                                     |
+| [Telekom Scale](https://github.com/telekom/scale) | [footer](https://telekom.github.io/scale/?path=/docs/components-telekom-footer--standard) | Footer contains a Telekom logo. There are slots for a legal line and a list of links.                                                                                                                                                                                    |
+| [Washington Post Design System](https://build.washingtonpost.com/) |                                             ❌                                             |                                                                                                                                                                                       |
+
+## Conclusion
+
+Most design systems do not offer a footer component. The few footers are rather simple, styled (background colour, centring) wrappers that offer one or more slots for any lists and components. For example, to display several links.
+
+The assumption here is that footers are often very individually structured, so that overly strict specifications on the part of the design system would be too **restrictive**.
+
+## Thoughts on implementation
+
+### Mobile Accordion
+
+🧠 _Link lists are summarised in an accordion on mobile so that the footer appears shorter and tidier._
+
+❓Links within collapsed accordion items are not read out by screen readers, only when the item is expanded. The page search does not find these links either. **Presumably this is not a11y compliant.**
+
+### data props versus component driven
+
+🧠 _Should the contents of the footer be transferred exclusively as data per property? Or are the contents mainly assembled "manually" via various (sub)components?_
+
+#### data props only
+**Pro**
+- easier to use for devs
+- the integrity of the footer is guaranteed. a standardised look is maintained.
+
+**Contra**
+- not consistent with the approach of existing components
+- not very flexible
+- links cannot be customised, which may be necessary depending on the framework
+
+#### (sub)components only
+**Pro**
+- flexible in use
+- standardised use within the DST
+- structure of the footer is represented in the template
+
+**Contra**
+- devs must strictly follow the docs to build a footer
+- there are no active guides, such as code completion or type checking, when using the footer component
+- potentially more errors are possible
+- devs need to write more code in the template
+
+
+