PEST Analysis is used to assess the external factors to the current business situation. Often used with SWOT and Porter Five Forces.
Cone of Uncertainty
Cone of Uncertainty reflects the variability of the project through its lifetime. The variability is decreasing as more is known.
DEEP Product Backlog
DEEP acronym for Agile Product Backlog, consisting of Detailed Appropriately, Estimated, Emergent and Prioritized principles.
Lightweight framework - complex problems poster. Scrum is a framework not only for software development guiding the increment creation process, while offering enough freedom.
Minimum Viable Product
Start with MVP poster. Minimum Viable Product is the core of your product which can provide enough functionality to observe the user behavior.