Last week I have successfully passed the AWS Certified Solutions Architect - Associate 2018 and want to tell about my experience passing AWS certification exam. Amazon recommend have at least one year of hands-on experience in this field on AWS, but it's optional. Before I started preparing for the exam, I had experience with S3 and a little bit with Lambda, API Gateway, and DynamoDB. All other experience I got during preparation.
Apache Kafka is a fast, real-time, distributed, fault-tolerant message broker.
Using Kafka, you can transfer streaming data to the cluster, which is generated continuously, for example, a history of website visits, financial transactions, online shopping orders, application logs, etc. This information can help to understand what is happening with the data right now, create recommendations, use machine learning or aggregate data for further analysis. All this takes seconds or minutes, instead of hours and days.