In the King James Translation, two different words are used that are translated 'betray'. One, in the Old Covenant from the Hebrew is "ramah" and infers deception and treacherous misleading... the other 17 times are used in the New Covenant from the Greek 'paradidōmi' and has much more of the sense of 'to give over to one's power or use... to deliver someone up to another's capture or custody'.
It's in this sense that all the reference's to Judas Iscariot's betrayal of Yeshua (Jesus) are used in the New Covenant...
Not sure what you mean bt MMO other than Modus Operandi (method of accomplishing something). In this case it was very simple. Judas was a thief, which indicates his mind-set. He not only hoped to benefit financially (which he did) but more importantly, Judas was of the belief that the Old Covenant taught that the coming Messiah would place Israel back in the front of the nations and restore her former glory... defeating and casting out the Romans. He probably hoped to force that issue by having Jesus captured believing that Jesus would continue to work his miracles and achieve Judas'(and others) goals.
A hint of this is found in Judas' actual title... Judas "the" Iscariot has many proposed theories as to its origins. One, is that Iscariot is derived from the Greek to Latin "sicarii", meaning an assassain... one who would have had the political goals in mind. Though the true Sicarrii's apparently didn't come into being until perhaps AD50, this theory still has adherents since in Hebrew, the name Iscariot can mean a man of murder, a hireling. The title Iscariot orginated as an Israeli name. The name Iscariot is most often used as a boy name or male name but also denotes a place "Kerioth". Perhaps it's simply an appendage identifying his home town...
Most theologians conclude his love of money and personal gain would have been the final 'trigger' to his betrayal.
(Many of the Romans, if not most and even many of the Sanhedrin (the ruling Jewish Council) didn't personally know Jesus and may not have not known what he looked like. hence the need for the identification in the garden, especially by dim torchlight).