Infrastructure-as-a-Service (IaaS) clouds are evolving from offering simple on-demand resources to providing diverse sets of tightly-coupled monolithic services. Like OS kernels of the 1980’s and 1990’s, these monolithic offerings, albeit rich in features, are significantly constraining users’ freedom and control over the underlying— cloud—resources. For example, we are unaware of a true hybrid...

Recently cloud computing booming area and emerging trends in information communication technology domain. Resource allocation is to allocate the resource based on infrastructure as a service (IaaS) is one of the keys for large-scale Cloud applications. Therefore, performance evaluation of workload models and Cloud resource allocation and algorithms in a repeatable manner under different configu...

The banking sector is one of the best examples who create Big Data with increasing transactions per second across the globe. Each bank is administered by the DBA (Database Administrator) as a technical in charge. DBA makes an arrangement in the branch to divert query from authorized user to the appropriate data repository. The SQL core Engine accepts input stream, processes and optimized to inc...

Customers of cloud services choose the VMs profiles (SLAs) offered by the provider, and pay according to how long these VMs are utilized. Many works deal with how to decrease the cost of VM requests scheduling, but consider solely the charging models in the SLA. However, other characteristics in the SLA must be taken into account when choosing a VM to execute users’ applications (e.g. processin...

Cloud Computing provides many types of services mainly SaaS, PaaS, IaaS. Each of them have their own security challenges, but IaaS undertakes all types of challenges viz., network attack and request based attacks i.e. handling the requests from untrusted users, XSS (cross site scripting attack), DDOS and many more. These attacks are independent of each other and consequently the QoS provided by...

Future Internet applications are becoming increasingly dynamic and can be composed of a wide range of services controlled and hosted by di erent stakeholders. This paper addresses the challenge of resource provisioning for applications that have speci c Quality of Service (QoS) requirements and where consumers of Cloud resources want to avoid lock-in to any speci c Infrastructure-as-a-Service (...

An application provider leases resources (i.e., virtual machine instances) of variable configurations from a IaaS provider over some lease duration (typically one hour). The application provider (i.e., consumer) would like to minimize their cost while meeting all service level obligations (SLOs). The mechanism of adding and removing resources at runtime is referred to as autoscaling. The proces...

Introducción: La pandemia por coronavirus se diseminó mundialmente con una amplia variedad de presentaciones clínicas. Se reportó que 15% los pacientes requirió internación en unidad cuidados intensivos (UCI). Estudios epidemiológicos demostraron ventilación mecánica invasiva (VMi) SARS-Cov-2 presentan más riesgo infecciones asociadas a la atención salud (IAAS).

Platform as a Service (PaaS) solutions are changing the way that software is produced, distributed, consumed, and priced. PaaS, also known as cloud platform, offer an execution environment based on software platforms. To be competitive on the market, PaaS providers have to be aware of drivers of successful platforms and design or adjust their business models accordingly. Surprisingly, prior res...