What are the visa & residency requirements in Ireland?

"In order to visit and/or work in Ireland as a foreign national, individuals must apply for a visa. This process requires an individual to complete a written application form, provide evidence of identity, a valid passport, confirmation of health insurance, and evidence that the applicant has the financial means to provide for themselves while in the country. An individual must also typically appear for an interview with an Irish immigration officer. To gain residency in Ireland, one must apply for one of the available residence permits. Application requirements include proof of identity, a current valid passport, health insurance, sufficient funds to support one’s self and any dependents, proof of employment or study, evidence of immigration permission, and a completed application form. The Irish government also requires applicants to participate in a screening process that includes an interview, criminal background check, and/or a review of any existing immigration records," explained one expat living in Ireland.