High-level system design or HLD is a step-by-step description of the architecture of an IT system. It is created to ensure that the customer’s ToR is 100% fulfilled in compliance with all the necessary requirements and is based on the results of the audit preceding the HLD.
Structure all existing components and approaches.
Adapt them to the concept of the future IT infrastructure.
This type of design describes the system at the level of interfaces, subsystems, and modules, and is not responsible for analyzing configurations in detail.
Designing a visual concept of the IT system architecture, as well as full detailing.
Step-by-step instructions on what the functions of each element are and how they interact with each other. We also add information about the result of each action.
You get a complete table with general information on the implementation of software architecture. This includes information about important work stages that helps to create a full-fledged project plan, including the calculation of labor costs.
Report on the state of IT infrastructure: resources of the main equipment components, as well as identified problems and risks that may affect business operations
Recommendations for eliminating existing problems
Recommendations for system modernization
Formation of tasks from the customer and the contractor.
Description of the design: what is the basis, what meaning we put into it.
Solution size and functionality: scaling prospects, computing power, etc.
Defining the goal: what are the purposes of forming an HLD.
Key features: security, monitoring, control, etc.
HLD is a good solution for system planning because it is a flexible format where you can change something, re-analyze it, and influence the improvement of performance. This method allows you to analyze the project at scale to clearly understand which specific actions will lead to which specific results.
Supply of equipment, materials and software
Construction and commissioning of data centers
Audit of information and network security
Audit and design of communications and engineering systems