Due to Pantheon's distributed architecture, there are a number of special considerations that all developers should be aware of:

• media streaming
• large file storage 
• module and plugin selection
• network-based security

A complete list of these considerations is available here: https://pantheon.io/docs/guides/platform-considerations

Of special note for UT developers:

• Pantheon is not a content distribution network, so bandwidth-intensive content like streaming or downloading video should be hosted on an appropriate service dedicated to media streaming (e.g. YouTube, Vimeo, MediaSite)
• Avoid editing CMS core or distribution-related code at all costs! Future updates from the upstream repository will cause conflicts in your site if the CMS core, distribution themes, or modules/plugins are modified. Whenever possible, use subthemes, hooks, or other techniques to customize core or distribution features
• Pantheon does not natively support restriction of content based on EIDs, roles, or affiliations

Developers wishing to implement EID-based authentication for content editors should consult the appropriate KB article for their selected CMS distribution:

• Drupal (all modern versions, including UT Drupal Kit)
• WordPress (except WordPress for Texas)
• WordPress for Texas custom upstream