TEL AVIV— Microsoft Corp. said Thursday it bought Israeli startup Aorato, in a deal that people familiar with the matter valued at about $200 million.

“I’m pleased to announce today that Microsoft has acquired Aorato, an innovator in enterprise security,” Takeshi Numoto, a vice president for cloud and enterprise marketing at Microsoft, wrote in a blog.

Founded in 2011 by veterans of the Israel Defense Forces technology units, Aorato develops and sells software that monitors access to central communication components in enterprise IT systems.

The two sides completed the details of the deal late last night, according to the people familiar with the matter.

The Wall Street Journal reported talks between the two companies in July.