What new feature did Instagram add to its platform in response to TikTok's popularity?

The feature that Instagram added to its platform in response to TikTok's popularity is Reels. This addition allows users to create and share short video clips set to music or audio, similar to the format that has made TikTok immensely popular. Reels was introduced as a way to encourage creative expression and compete with the engaging, quick-consumption video format that TikTok offers.

While Stories and Live videos are existing features that Instagram has had in place for some time, they do not directly address the competition with TikTok's short-form video content. Reposts, while a way to share other users' content, do not feature the same creative tools that Reels provides, which are crucial in capturing the essence of TikTok's appeal. Reels specifically aims to foster a community around short video entertainment, making it a key feature in Instagram's strategy to retain and attract users amidst the rise of TikTok.