Difference Between HLD and LLD
In this section, we are going to discuss the difference between HLD and LLD; and see the brief introduction between them.
What is HLD?
The HLD stands for High-Level Design, where the designer will only focus on the various models, like:
The solution architect develops the High-level design, which is used to specifies the complete description or architecture of the application.
The HLD involves system architecture, database design, a brief description of systems, services, platforms, and relationships among modules.
The HLD is also known as macro-level or system design. It changes the business or client requirement into a High-Level Solution.
The High-level design is created before the Low-Level Design.
What is LLD?
The LLD stands for Low-Level Design, in which the designer will focus on the components like a User interface (UI).
The Low-level design is created by the developer manager and designers.
It is also known as micro-level or detailed design. The LLD can change the High-Level Solution into a detailed solution.
The Low-level design specifics the detailed description of all modules, which implies that the LLD involves all the system component's actual logic. It goes deep into each module's specification.
The Low-level design is created after the High-Level Design.
HLD vs LLD
In the below table, we have discussed some significant comparisons between high-level design and low-level design.
In this section, we have understood the major difference between high-level and low-level designs.
And we can conclude that the high-level design specifies the complete report and planning of the particular software product or application. On the other hand, the low-level design specifies the in-detail report of all the modules.
In Software Development Life Cycle's design phase, the members of design team, client team, and review teams are included in high-level designing. On the other hand, the design team and operation teams will prepare the low-level Design.
Finally, we can say that both HLD and LLD are essential part of design phase in the SDLC process for any software product.