According to my experience, this picture should be completed by Powerpoint in 2003.
Drawing used in Powerpoint is often divided into two kinds, one is hand-drawn graphics, and the other is inserting picture material.
In this picture, the orange cloud part, the hexagonal part, and the blue stripes and connecting lines on it are all drawn by hand; Icons such as servers, computers, and network towers are all inserted with external picture data.
The hand-painted part is very simple. There is a special cloud shape in the custom graphics of PPT. After the selection, drag the mouse to draw a cloud shape with an appropriate size, then fill it with orange and add a shadow. Hexagons also have special graphics, but to achieve the effect on the map, it is necessary to set the 3D format after drawing to make a three-dimensional sense;
As the material used to insert PPT, if you directly use the bitmap you usually see (such as photos), the colors may be colorful and there will be unwanted backgrounds, which is quite inconvenient for you to use yourself. So in practice, some icon materials are often used. Icon material is not a photo, but an art work drawn by computer, which has the characteristics of high resolution, prominent theme and no need for matting. If you are lucky enough to find a complete set of icons, you can also ensure the consistency of style. After downloading, you can directly insert PPT and zoom to the appropriate size, which is convenient and fast. It is recommended to use it first in the production process.