Suppose its your job to scale the AWS infrastructure of a web site to serve an increasing number of users. Discuss the usage of below requirements to meet the scalable infrastructure requirement for your website.

• Decoupling application tiers to prepare for horizontal scaling
• Choosing among the database options available on the AWS platform
• Shifting components of workload to appropriate AWS services for better performance and efficiency
• Using Auto Scaling to ensure that you have the correct number of EC2 instances available to handle the load for your application
• Adoption of highly available VPC based network infrastructure

You must consider scalability of web, application and database tiers in your multi-tier cloud infrastructure setup and support your architecture through an illustrated diagram.

a) A developer is managing an application hosted in EC2, which stores data in an S3 bucket. To comply with the new security policy, the developer must ensure that the data is encrypted at rest using an encryption key that is provided and managed by the company. The change should also provide AES-256 encryption to their data. Based on your understanding, which approaches may be adopted when storing sensitive data on S3 storage option in the AWS? Discuss your answer in your own words. (5 marks) b) A startup has recently launched a high-quality photo sharing portal using Amazon EC2 and 53. The company noticed that there are other external websites which are linking and using their photos without permission. This has caused an increase on their data transfer cost and potential revenue loss. Based on your understanding, recommend a most effective method to solve this issue