A company wants to develop a custom application but lacks the infrastructure to support the development process. They are considering various cloud service models to determine which best suits their needs for development, deployment, and scaling. Which cloud service category should the company choose?

Platform as a Service (PaaS) is the most suitable cloud service category. PaaS provides a complete development and deployment environment in the cloud, including application runtimes, middleware, operating systems, and development tools. This allows the company to focus solely on developing, deploying, and scaling their custom application without managing the underlying infrastructure (servers, storage, networking), which they currently lack. PaaS abstracts the infrastructure layer, accelerating the development lifecycle.

A. IaaS would require the company to manage the operating systems and middleware, adding overhead they wish to avoid.
B. NaaS only provides network services and is not a comprehensive platform for application development and deployment.
D. SaaS provides ready-to-use software applications, which is unsuitable as the company wants to develop its own custom application.

1. Mell, P., & Grance, T. (2011). The NIST Definition of Cloud Computing (NIST Special Publication 800-145). National Institute of Standards and Technology. Page 2, Section "Service Models".

2. Gordon, A., & Hernandez, S. (2023). Official (ISC)² CCSP Certified Cloud Security Professional Official Study Guide (3rd ed.). Wiley. Chapter 1, "Cloud Computing Concepts," Section "Platform as a Service (PaaS)".

3. Stanford University. (n.d.). CS 108: Cloud Computing. Course materials. Retrieved from Stanford courseware discussing cloud service models, specifically the role of PaaS in application development.