Imagine that you are playing with a really big Lego set. Normally, you can easily build a small castle, a house, or a car with just a few Legos because they are small and simple to put together. But what if you wanted to build something huge, like a huge castle or a skyscraper? For that, you would need a lot more Legos, and they would need to be put together in a very specific way to make sure everything fits and works as it should.
Now, think of these Legos as computer programs and the big thing you want to build as a very large business application. A business application is a software program that is used to help a company manage their daily tasks, like keeping track of sales, managing inventory, or organizing customer information.
A very large business application encompasses all of these tasks and more for a very big company. It needs to be able to handle a lot of data and user inputs at the same time without slowing down or messing up. This is why they need a lot of different computer programs working together in a very specific and organized way.
To build these big applications, a team of programmers needs to follow a very structured plan, much like if you were following the instructions to build a Lego set. They need to make sure that each program is working smoothly and that the data is being communicated correctly between all the different programs.
Overall, building a very large business application is like building a huge Lego set, but with computer programs. It takes a lot of planning and work, but once it's done, it can help a big company run more smoothly and efficiently.