What sort of phage is bacteriophage lambda considered to be?

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Bacteriophage lambda is considered to be a temperate phage because it can enter a lysogenic cycle, in which it integrates its genome into the host bacterial chromosome, and then remains dormant until conditions are favorable for the phage to enter the lytic cycle, in which it replicates and kills the host cell. This is in contrast to virulent phages, which always enter the lytic cycle, and do not integrate their genome into the host chromosome. Plant and animal phages are not considered to be distinct categories of phage.

What Sort of Phage Is Bacteriophage Lambda Considered to Be