uo;ll learn about the main authorization features and how to use them in different situations.</p><h2 id=characteristics>Characteristics</h2><h3 id=rpc-level-authorization>RPC level authorization</h3><p>Authorization is performed at the level of individual RPCs. Specifically, it controls &ldquo;who can access my <code>bookstore</code> service”,
or &ldquo;who can access method <code>getBook</code> in my <code>bookstore</code> service”. It is not designed to control access to application-specific
resource