The document provides tips on how to save 98% on an Azure bill by using a serverless architecture and practicing serverless minimalism. It explains that serverless services scale resources reactively based on usage, resulting in close to 100% utilization and only paying for what is used. This leads to significant savings compared to conventional PaaS architectures that require pre-provisioning capacity to handle spikes, resulting in low utilization and wasted spending. The document also advocates practicing "serverless minimalism" by only using the resources needed to complete a task and writing the minimum amount of code required.