Simplicissimus provides e-content distribution, self-publishing, and retail platforms powered by AWS. Their main assets - Stealth, Narcissus, Ultima Kiosk, and Ultima Books - leverage AWS services like S3, EC2, RDS, and auto-scaling for reliability and flexibility. By adopting AWS, Simplicissimus avoids hardware costs and issues while gaining scalability, disaster recovery, and reduced time to market. Cost optimization strategies include reserved instances and horizontal scaling based on user demand.