Image Match now lets Bing users perform a search using an image rather than a word or phrase.
Microsoft's search engine now has the ability to perform more complex image searches than before. From the Images tab in Bing, you can click the button at the bottom of the screen that says Image Match. That will automatically bring up a number of different image sizes based on search results.
From there, you also get visibility on different image sizes and can look for similar images to the ones found. But the most important feature is the ability to be able to perform a reverse image search. By either uploading an image from your computer or pasting a URL, you can search using the visual properties of the image to find any other versions. This is useful if you are looking for the same image in another size, but more important for photographers who want to find out if their work has been posted elsewhere online without their permission.