title: AWS Lambda: How to use tools that must be installed first in linux?
body: <p>I understand that AWS Lambda runs on the application layer of an isolated environment. </p>
  
  <p>In many situations, functions need to use third-party tools that must be installed first on the linux machine. For example, a media processing function uses <a href="https://ExifTool.org/" rel="nofollow noreferrer">exiftool</a> to extract metadata from image, so I install <code>exiftool</code> first.</p>
  
  <p>Now I want to migrate the media processing code into AWS Lambda. My question is, how can I use those tools that I originally must install on linux? My code is written in Java, and <code>exiftool</code> is necessary.</p>