TIM-6410 V4

Saraswat, M., & Tripathi, R. C. (2020). Cloud Computing: Comparison and Analysis of Cloud Service Providers-AWs, Microsoft and Google. 2020 9th International Conference System Modeling and Advancement in Research Trends (SMART), 281-285.
This is a detailed look into cost comparisons between AWS, Microsoft, and Google.

Boza, E. F., Abad, C. L., Villavicencio, M., Quimba, S., & Plaza, J. A. (2017). Reserved, on-demand, or serverless: Model-based simulations for cloud budget planning. 2017 IEEE Second Ecuador Technical Chapters Meeting (ETCM), 1–6.

Saran, C. (2018). Keeping tabs on cloud costs. Computer Weekly, 20–24.
This article provides insight into how visibility, provisioning, and minimum spend limitations factor into overall costs.