Cloud Computing discussion

In 250 – 350 words, and using the Erl et al. (2013) book as your ONLY source, respond to the following:-

1.  IN YOUR OWN WORDS, define Identity and Access Management (IAM) and explain its importance to organizations.
2. Erl et al. noted that "IAM mechanisms exist as systems of four components." List three of these components and ways each is vital to organizational success.