What the Instagram Feed placement is
The Instagram Feed is the scrolling surface of the app, and this placement puts your ad between posts from the accounts a person already follows. The layout is media first: the image or video takes almost the whole screen, the profile name sits above it, and the caption appears underneath, cut short after a line or so with an option to expand.
It takes single images, video and carousels, and it adds a button that organic posts do not have. One detail is easy to miss: people frequently tap the profile name before they tap the button, so the account they land on is part of the ad whether you planned it that way or not.
Why the Instagram Feed matters
It is a looking surface, not a reading one. The picture has to carry the message on its own, because most people decide whether to stop before they have read a word of the caption. That suits products with something visible to show — clothing, food, property, travel, fitness, salons — and it makes a service ad harder work, since the promise has to be made visually rather than argued in text.
It also reaches a different slice of the audience from Facebook. In Nepal the two apps overlap heavily but not completely, and the tone that works on one can look out of place on the other, which is a good reason to give each a version rather than a copy.
Where it goes wrong
The most common fault is a repurposed Facebook ad: a wide crop with a headline baked into it, a long caption written to be read, and a design that looks like an advertisement in a place where advertisements are ignored. The second is a neglected profile. If the account has no recent posts, no clear description of what you sell and no way to contact you, the taps that go there are wasted.
The third is video made for sound. Feed video starts muted, so a clip whose message lives in the voiceover says nothing at all to most of the people who see it. Hashtags are a fourth, smaller one — they do the work of discovery on organic posts, not on paid delivery.
How to act on it
Design for the crop the surface actually uses: an upright or square frame, one clear subject, and any words large enough to read at arm’s length on a phone. Put captions on video so a muted view still lands, and keep the first line of the caption as the offer rather than the introduction.
Tidy the profile before you spend, since it is effectively a second landing page for Instagram ads. Then compare results against the Facebook Feed on cost per result rather than on impression cost, and give each surface its own asset before you decide either one is failing.