What is Monolith

• This is a unit of deployment, where all the functionality of the system has to be deployed together
• Single Process Monolith
  
• Modular Monolith: Subset of Single Process Monolith
  
• Challanges:
  • The whole application has to be deployed and the necessary changes in the database also should be up to the mark
  • When there is load on som part/module of your application and you need to scale the whole application

What are micro services

• Microservices are independently deployable services modelled around business domain.
• These microservices communicate with each other via networks
  
• Each service can be developed in a differnt programming language as the communications between microservices are generally over http
• Challenges:
  • Microservices are distributed systems, so managing the application is more complex than a monolith
• For deploying the applications which are microservices and handling challenges, we would require an orchestration software and kubernetes is best player in this area.