Systems development life cycle

This circular arrows diagram sample shows the systems development life cycle (SDLC) stages.
"The systems development life cycle (SDLC), also referred to as the application development life-cycle, is a term used in systems engineering, information systems and software engineering to describe a process for planning, creating, testing, and deploying an information system. The systems development life-cycle concept applies to a range of hardware and software configurations, as a system can be composed of hardware only, software only, or a combination of both." [Systems development life-cycle. Wikipedia]
The arrow circle diagram example "Systems development life cycle" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Circular Arrows Diagrams solution from the area "What is a Diagram" of ConceptDraw Solution Park.

This circular arrows diagram sample shows advanced persistent threat lifecycle.
It was designed on the base of the Wikimedia Commons file: Advanced persistent threat lifecycle.jpg.
[commons.wikimedia.org/ wiki/ File:Advanced_ persistent_ threat_ lifecycle.jpg]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"Advanced Persistent Threat (APT) APT is a set of stealthy and continuous hacking processes often orchestrated by human targeting a specific entity. APT usually targets organizations and or nations for business or political motives. APT processes require high degree of covertness over a long period of time. As the name implies, APT consists of three major components/ processes: advanced, persistent, and threat. The advanced process signifies sophisticated techniques using malware to exploit vulnerabilities in systems. The persistent process suggests that an external command and control is continuously monitoring and extracting data off a specific target. The threat process indicates human involvement in orchestrating the attack.
APT usually refers to a group, such as a government, with both the capability and the intent to persistently and effectively target a specific entity. The term is commonly used to refer to cyber threats, in particular that of Internet-enabled espionage using a variety of intelligence gathering techniques to access sensitive information, but applies equally to other threats such as that of traditional espionage or attack. Other recognized attack vectors include infected media, supply chain compromise, and social engineering. Individuals, such as an individual hacker, are not usually referred to as an APT as they rarely have the resources to be both advanced and persistent even if they are intent on gaining access to, or attacking, a specific target." [Advanced persistent threat. Wikipedia]
The arrow donut chart example
"Advanced persistent threat lifecycle" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Circular Arrows Diagrams solution from the area "What is a Diagram" of ConceptDraw Solution Park.

This arrow loop cycle diagram sample was created on the base of the figure illustrating the webpage "Exploratory Advanced Research Program Hand-Off Workshops" from the US Department of Transportation - Federal Highway Administration (FHWA) website. "The FHWA’s research and technology innovation life cycle illustrates that research and technology development are not insular activities, but integrated processes that together constitute a system.
Following general workshop discussion, a number of common issues emerged among the groups. These centered around the research life cycle, communicating the value of exploratory advanced research, and continued project funding. It was felt that there is a general need to better describe the research and deployment cycle specific to highway transportation and possibly to highway research fields, such as materials or system planning. Research life cycle diagrams show a very linear, chronological process but it is not necessarily that way in reality." [fhwa.dot.gov/ advancedresearch/ pubs/ 11034/ ]
The arrow loop diagram example "Innovation life cycle" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Target and Circular Diagrams solution from the Marketing area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ marketing-target-and-circular-diagrams