For creating diagrams, I definitely use Visio for HLD, LLD, and traffic flow diagrams. Apart from Visio, I use Jira only if the customer specifically requests it; otherwise, I do not use an in-house version of Jira in my organization. One of the good features of using the Microsoft umbrella product is that if I create a big diagram and then work on the HLD or LLD in Word, I can select everything from Visio and paste it as an image without needing to resize it, which streamlines the process of creating documentation for customers. The main benefits Visio provides me include simplifying processes, saving time on manual work with diagram creation, and delivering a clean architecture, whether it is network architecture or application flow. I have created diagrams for AWS, Azure, GCP, and on-premises data centers, including rack elevation diagrams and organization charts. Modifications can be made easily and reflected immediately, and I can create PNG images to share with the executive team.
