Business models for cloud computing environments that consider attributes related to performance and security

Author(s)

Bruno Guazzelli Batista

• Document type: Doctoral Thesis
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Instituto de Ciências Matemáticas e de Computação (ICMC/SB)
• Defense date: 2015-11-10

Examining board members

Regina Helena Carlucci Santana; Sarita Mazzini Bruschi; Marco Dimas Gubitoso; José Maria Parente de Oliveira; Hermes Senger

• Advisor: Regina Helena Carlucci Santana

Abstract

This PhD thesis has as main goal defining business models for cloud computing environments that consider performance and security as quality of service attributes during the service level agreement definition. For this, it was necessary quantifying the impact on the performance of a cloud environment in which different security mechanisms were applied. Techniques and methodologies available in the literature that aim ensuring the integrity, availability and confidentiality of data were used to quantify the overhead, addressing challenges related to access, storage and manipulation of data in services offered through virtual machines. Experiments were executed, in which the response variable behaviors were analyzed, using scenarios with different security mechanisms and workloads. In this way, it was possible to compare the overhead imposed by the security mechanisms with the changes in the quantity of resources applied by a module proposed, called ReMM. According to the results, the ReMM changed the amount of allocated virtual resources using two scalability algorithms, ensuring the requirements defined in service level agreement. However, the changes in the computational resources to face the overhead imposed by the security mechanisms influenced the final costs of the service. Therefore, security overhead, performance and cost were considered in the definition of business models in different cloud computing environments. (AU)

• FAPESP's process: 11/17201-3 - Business models for cloud computing environments that consider QoS attributes related to performance and security
• Grantee: Bruno Guazzelli Batista
• Support Opportunities: Scholarships in Brazil - Doctorate