Recommend HTTP(S) for thumbnails etc.

Author: m-mohr

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+
+- Recommend that thumbnails and similar assets use HTTP(S) as access mechanism
+
 ## [v1.1.0] - 2024-09-10
 
 ### Added

best-practices.md

@@ -426,6 +426,10 @@ If your data for the Item does not come with a thumbnail already we do recommend
 | Spatial extent                 | Limited                                             | Full                                                               | Full                                                                                         |
 | Use case                       | Quick overview, often in lists of items/collections | Display for a single Item/Collection, sometimes shown on a web map | Display for a single Item/Collection, often shown on a map, may be displayed in GIS software |
 
+The files offered for the roles `thumbnail`, `overview` and `visual` should be accessible via HTTP(S).
+If the [Alternate Asset Extension](https://github.com/stac-extensions/alternate-assets) is used,
+the default access mechanism for should be HTTP(S).
+
 ### Bands
 
 As of STAC 1.1, the `bands` array can be used in combination with property inheritance to provide users with more flexibility.