Optimal Allocation Strategy of Cloud Resources with Uncertain Supply and Demand for SaaS Providers

How to make full use of IaaS resources while guaranteeing the quality service conditions is one main issues facing resource allocation. However, current allocation schemes at and PaaS levels do not consider uncertainty SaaS user access (i.e., demand), availability, provider revenue. For existing cloud configuration levels, randomness (resource demand) supply applications, as well revenue application providers, are considered enough, optimal strategy with uncertain demand for providers proposed. This based on level, which ensures that provider’s maximized without violating QoS constraints also facilitates allocate fully utilize accurately. The proposes only strategies under three scenarios: certain supply, but establishes quantitative models demand. effectiveness efficiency algorithms verified through experiments, realization shows utilization effectively improved constraint condition same time.