The growing importance of environmental or ecological factors in the first decade of the 21st century have given rise to green business and encouraged widespread use of an updated version of the PEST framework. STEER analysis systematically considers Socio-cultural, Technological, Economic, Ecological, and Regulatory factors.
*more on the difference and relationship between PEST and SWOT*
PEST is useful before SWOT - not generally vice-versa - PEST definitely helps to identify SWOT factors. There is overlap between PEST and SWOT, in that similar factors would appear in each. That said, PEST and SWOT are certainly two different perspectives:
PEST assesses a market, including competitors, from the standpoint of a particular proposition or a business.
SWOT is an assessment of a business or a proposition, whether your own or a competitor's.
Strategic planning is not a precise science - no tool is mandatory - it's a matter of pragmatic choice as to what helps best to identify and explain the issues.
PEST becomes more useful and relevant the larger and more complex the business or proposition, but even for a very small local businesses a PEST analysis can still throw up one or two very significant issues that might otherwise be missed.
(The PESTLE model provides users with a series of headings under which users can brainstorm or research key factors:) •Political: what is happening...