beans.xml

Not required in fact starting from JavaEE7 on. But if you want to control, adjust the bean-discovery-mode
xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd" bean-discovery-mode="all">
For jar projects used as external 3rd party libs, put it in
src/main/resources/META-INF
docs.jboss.org/cdi/spec/1.1/cdi-spec.html#bean_archive