If you are considering permanent migration then Canada bar none. Instantly gives you PR without even having to put a single foot in the country or find a job if you full-fill the point-based requirements (you'll normally need degree + job experience + english/french exam).

Lot of people are mentioning Germany here and it's fairly easy in the global scale sure but it's still not instant like Canada's. You will have to find a job that sponsors Blue Card and spend a minimum of 21 months before you can apply for PR, or 4 years on work permit if you do not qualify for Blue Card. Sure, 21months or even 4 years isn't that long but it's still a lot more than instant for Canada.

Additionally, if you are looking for citizenship. Canada again gives this to you in just 3 years of getting PR while Germany makes you wait at least 6-8 years.

Source: Heavily researched different countries. Ended up moving to Germany because I want to live in Europe but was seriously considering Canada because it was sooooo much easier/quicker for permanent, skill-based immigration.