Validity 6Years 2Years
Renewing a Visa Can be renewed once in 3 year.  Increment or until you green card is being processed. Renewed indefinitely after 2 years. Can be convered to H1B cannot apply ofr Green Card
Only jobs that are categorized as "Speciality Occupation" Vocational Counseler, Technical Publication Writer, Social Worker, Pharmacist, Orthopedist, Minister, Medical Technologist, Medical Record Librarian, Librarian, Journalist, Interior Designer (Commercial), Industrial Designer (with Bachelors of Arts), Hotel Management, Graphic Designer, General Manager(where business is complex), Fashion Designer, Electronics Specialist, Computer Programmer, Dietician, Chiropractor, Acupuncturist, and Accountant. Same
Can your Spouse/partner/depended work? No Yes
Visa Numbers per year

Capped 

Limited Visa releases for all occupations.

First come First serve basis.

Allocated on lucky draw system.

Quota fills quickly.

Limited time

10,500 per year

Rarely filled.

Additional advantage to fill the skill shortage using this visa.

Application Process

Huge Documentation involved.

Long formalities involved.

Time consuming (1 month to 6 months)

Less documentation involved.

Few formalities involved.

Little Time consuming(1month)

Additional Administrative procedures might delay process by weeks, in special cases.