Instagram is a great resources for marketing purposes. A single picture might create enough buzz to put a business on the "map". The social sharing site works well with cell phones because the community is focused on spreading thoughts and ideas (the very essence of a community). People who want to edit their marketing pictures before sending them may be at a loss. The Desktop for Instagram App makes it very easy to post these pictures from your computer.
There is a way to upload pictures to Instagram from your desktop without using this free software. I tried it and wasted about an hour and never got it to work. Perhaps there was a difference in the technologies being used.
Companies use Instagram for marketing purposes by uploading pictures and other content people may find useful. With a billion monthly users (Statista) it makes sense for companies to start using this platform.
One of the advantages is that most of the young people are already using this system and Instagram offers an excellent way to keep in touch. Even if you are a local business many young people may follow you anyway. When you have a sale or event to post go ahead and create a flyer and upload.
One of the reasons why the Desktop for Instagram App is handy is that you can edit your pictures before uploading. Cell phones don't often have this capacity and don't have the most powerful editing program. Your desktop makes it possible to post a picture from your hard drive.