Monolithic architecture

Monolithic architecture is like building a big castle all at once. You start with one big block of stone and you carve and shape it until everything you need is there. You put up walls, towers, and add rooms for knights, princesses and your kitchen. When it's all done, everything is in one big building, just like a castle.

In software terms, monolithic architecture means that all the parts of a program, like the user interface, database, and business logic are all built together as one big application. This type of architecture is great for small projects but can become a problem when the application grows too big, and it becomes harder to change or fix things in the program. Like a castle, if you want to add a new room or change something in the kitchen, you will have to tear down a lot of walls and possibly rebuild everything. This can take a lot of time, money and resources. Instead, applications are now built using modular architecture which allows pieces of the program to be built and updated separately without disrupting the entire program.