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Containers overview

Traditionally, software applications were developed following a monolithic architecture approach, meaning all the services or components were locked to each other. You could not take out a part and replace it with something else. That approach changed over time and became the N-tier approach. The N-tier application approach is one step forward in container and microservices architecture.

The major drawbacks of the monolith architecture were its lack of reliability, scalability, and high availability. It was really hard to scale monolith applications due to their nature. The reliability of these applications was also questionable because you could rarely easily operate and upgrade these applications without any downtime. ...