In 2012 after spending 2 years working on native application development, the Drupal Association asked me to be a featured speaker Drupalcon Denver 2012.
Mobile applications were on the rise and major brands were picking up the Drupal iOS SDK so they could use it to focus on the functionality of their apps, and not how they talk to an API.
During this talk I discussed the common pitfalls, how you get data out, and how you push data up. I did some live development but in hindsight I wish stepped up at the time and talking more agnostically about Native Mobile development.
Im pretty happy with this talk though as it was by far the largest I had ever done. An estimated 1000 people were in the room. You can watch the video here.