Big Data has become a critical component of any company's decision-making process and a means of gaining an advantage over the competition. Therefore, Apache Spark and Cassandra are in high demand as Big Data technologies. In order to get the most out of the data generated by the company, companies are looking for professionals who are skilled in using them.

When it comes to large amounts of data that cannot be analyzed using traditional methods, the term "big data" is used. An organization's raw material for running analytics and extracting insights that can help them craft better business strategies is often big data. It's more than just a byproduct of the technological processes and applications that have led to it. In today's world, data is the most valuable asset.

The term "big data" refers to the increasing volume, velocity, and variety of data that traditional databases cannot handle. The term "big data" has many definitions, but the most common one is the "three V's" of big data: volume, variety, and velocity.

Streaming data is a type of data that is constantly being updated. When a large number of sources are generating data at the same time in a small amount of time, it's known as streaming data (order of Kilobytes). There are many types of streaming data, including log files generated by customers using your mobile or web applications, ecommerce purchases and in-game player activity as well as information from social networks, financial trading floors and geospatial services.