Lambda services create code that can later respond to events as needed. These events are anything that occurs within the AWS environment - HTTP Request, Modifications on S3 Buckets, or new EC2 instances being brought up. This makes Lambda an essential service when it comes to setting up and extending out a network and its services for an organization. However, Lambda does present some issues, such as creating weak restrictions on accessing Lambda, vulnerable functions that can make unauthorized actions, and rules built within the Lambda policies that allow for exploration to occur.