At small companies, engineers often wear multiple hats, juggling a mix of responsibilities. Large companies have specialized teams with clearly defined roles in DevOps, SRE, and Platform Engineering.

Lambda is regional while Lambda@Edge runs globally at edge locations. Lambda integrates with more AWS services. Lambda@Edge works with CloudFront.

Zero trust fixes vulnerable trust models and limited visibility in VPNs by verifying all users and devices, encrypting everything, and monitoring all activity - before authorizing access.