Maintain aspect ratio on image tag

Sometimes we are using img tag instead of background-image when displaying images to our page, specially when we have dynamic content to display. To  Maintain aspect ratio using background we normally do or declare:
 

div {
  background: url({url});
  width: 200px;
  height: 200px;
  background-size: cover;
}

But if you are using img tag, you may use

  object-fit: cover;

Example:

img {
  width: 200px;
  height: 200px;
  object-fit: cover;
}

To God all the Glory