The Canadian Experience Class (CEC) program is an immigration stream under the Express Entry system in Canada, specifically designed for certain temporary foreign workers and foreign student graduates who have already gained skilled work experience in Canada. This program aims to help these individuals transition from temporary to permanent residence status.

CEC is managed under the Express Entry system and uses the Comprehensive Ranking System (CRS) to rank interested candidates. Applicants who have competitive CRS scores will receive invitations to apply for Canadian permanent residence.

In order to be eligible for CEC, a candidate must have at least 12-months of full-time (or an equivalent amount of part-time), skilled work experience in Canada. The Canadian work experience must have been acquired within the previous three years from the date of the application.

CEC is not an option for foreign nationals who do not have recent Canadian work experience.

To count your 12 months of Canadian work experience towards your CEC application, it must meet the following conditions:

1. Be obtained in Canada within the 36 months before the date of submission of the electronic Application for Permanent Residence (eAPR).
2. Your work experience in Canada can be classified into one of the National Occupational Classification (NOC) Training, Education, Experience, and Responsibilities (TEER) categories: TEER 0, TEER 1, TEER 2, or TEER 3, based on your training, education, experience, and job essential duties.
3. Be lawfully obtained, paid work experience in Canada.

express Entry holds rounds of invitations and invites CEC candidates based on their CRS scores.

Yes. As long as you meet the basic eligibility requirements for CEC as mentioned above, you can apply from anywhere in the world.  

Proof of funds is not a requirement of the CEC program. You will not be required to provide any documentation regarding your finances. 

It depends. If your paid internship is not part of your education, then you may count it towards the Express Entry work experience requirement.