Asingle m4.medium nat instance inside a vpc supports a company of 100 people. this nat instance allows individual ec2 instances in private subnets to communicate out to the internet without being directly accessible via the internet. as the company has grown over the last year, they are finding that the additional traffic through the nat instance is causing serious performance degradation. what might you do to solve this problem?

1. increase the class size of the nat instance from an m4.medium to an m4.xlarge.
2. attach an additional igw to your vpc.
3. use an elastic load balancer and forward traffic out through this elb. the elb will automatically scale on demand as traffic increases.
4. instead of using a nat, use direct connect to route all traffic through your vpc and back out to the internet.