The International English Language Testing System or IELTS exam is one of the most widely accepted means of assessing English proficiency for non-native speakers looking to pursue education or careers abroad where English is the main language. IELTS is available in two different formats - General Training and Academic modules. It is important for test-takers to understand the key differences between these variants and choose the right one based on their requirements.

The General IELTS exam is for candidates intending to migrate overseas or seeking work opportunities where English is used in everyday contexts, such as customer service or office administration roles. On the other hand, Academic IELTS is required for admission into undergraduate or postgraduate programs in colleges, universities or vocational courses conducted in English. It tests English skills that are specifically relevant in academic and educational settings.

The main distinguishing factor between the two is the module of the Listening and Reading sections. General IELTS contains everyday work, study and social topics like forms, timetables, maps, signs, consumption-based materials etc. For Academic, the content is focused more on academic themes relevant to tertiary education, which may include academic articles, lectures, textbooks and lab reports about various disciplines.

In terms of Writing, both exams include essays on contemporary issues where candidates must present arguments for and against a given statement. However, Academic IELTS also includes a task assessing formal letter/report writing abilities which may include data analysis, explaining processes or recommending solutions - important skills required to complete academic coursework.

Another difference lies in the Speaking test format. While General IELTS speaking interviews involve general social interactions akin to casual conversations, Academic speaking focuses on discussing topics of academic relevance to achieve structured arguments using factual supporting examples and academic style vocabulary.

In summary, General IELTS caters to individuals intending to stay, work and live in an English speaking country, without necessarily aiming at further study. Academic IELTS specifically evaluates English language proficiency required to pursue tertiary level education where the medium is English. Test-takers must opt for the relevant module based on their post-exam life and educational goals to prevent rejection of applications or enrolment due to inappropriate IELTS results. Choosing the right variant often makes a significant difference between a conditional and unconditional acceptance.