Demand Management is a very important and critical process in service strategy. It helps to understand customer demand for services so that appropriate capacity can be provisioned to meet those demands. Improper demand management leads to improper use of services and resources. Hence it’s worth analyzing the customer’s demand. Demand...

ITIL Availability Management aims to define, analyze, plan, measure and improve all aspects of the availability of IT services. It is responsible for ensuring that all IT infrastructure, processes, tools, roles etc are appropriate for the agreed availability targets. Part of: Service Design. The Objectives of Availability Management process...

Network Security deals with all aspects related to the protection of the sensitive information assets existing on the network. It covers various mechanisms developed to provide fundamental security services for data communication. This tutorial introduces you to several types of network vulnerabilities and attacks followed by the description of...

Cassandra is a fully distributed, masterless database, offering superior scalability and fault tolerance to traditional single master databases. Compared with other popular distributed databases like Riak, HBase, and Voldemort, Cassandra offers a uniquely robust and expressive interface for modeling and querying data. What follows is an overview...

ITIL Change Evaluation Process Change Evaluation is one of the main processes under the Service Transition Module of the ITIL best practice framework. We already learned about the Change Management process. We may think of this process as an extension of Change Management. This ITIL Change Evaluation Process comes into the picture, whenever...

COBIT? COBIT is ISACA's IT management system to help organizations create, coordinate and execute knowledge management and management strategies.First released in 1996 and developed to help financial audit societies better manage the growth of IT environments, COBIT (Control Objectives for Information and Related Technologies) was first...

Apache Spark tutorial provides basic and advanced concepts of Spark. Our Spark tutorial is designed for beginners and professionals.Spark is a unified analytics engine for large-scale data processing including built-in modules for SQL, streaming, machine learning and graph processing.Our Spark tutorial includes all topics of Apache Spark with...

Most books and guides on program management written in the last 10 years have suggested program ‘phases’, which are simply transpositions of the project linear perspective. This view can jeopardise the effectiveness of program management and its capability to deliver strategies. Although it is now agreed that the objective of programs is to...

In Apache Cassandra data modelling play a vital role to manage huge amount of data with correct methodology. Methodology is one important aspect in Apache Cassandra. Data modelling describes the strategy in Apache Cassandra. Conceptual Data Model: Conceptual model is an abstract view of your domain. It is Technology independent. Conceptual...

What Is Big Data? Big Data is a term used for a collection of data sets that are large and complex, which is difficult to store and process using available database management tools or traditional data processing applications. The challenge includes capturing, curating, storing, searching, sharing, transferring, analyzing and visualization of...