Partners for $27.7 million. The company introduced OLAP Services with a shared data set cache, to accelerate reports and ad hoc queries. In 2010, the company began developing and deploying business intelligence software for mobile platforms, such as the iPhone and iPad. In 2011, the company expanded its offerings to include a cloud-based service, MicroStrategy Cloud. In 2013, MicroStrategy sold Angel to Genesys Telecommunications Laboratories for $110 Million. In January 2014, the company announced a new feature of the platform called PRIME (Parallel Relational In-Memory Engine), co-developed with Facebook. In October 2014, the company announced plans to lay off 770 employees, a month after reducing Saylor's salary from $875,000 to $1 at his request. In June 2015, MicroStrategy announced the general availability of MicroStrategy 10. In the fall of 2018, the company released MicroStrategy 11. In January 2019, MicroStrategy announced the general availability of MicroStrategy 2019. In February 2020, the company announced its latest release, MicroStrategy 2020, including a new design for its HyperIntelligence analytics tool. Saylor resigned as CEO effective August 8, 2022. Phong Le, who had been president, succeeded him. Saylor remains the Executive Chairman of MicroStrategy. In a press release announcing the transition, Saylor said that he would focus on the company's bitcoin acquisition strategy and that Phong would manage overall corporate operations. On August 31, 2022, the Attorney General for the District of Columbia sued Saylor for tax fraud, accusing him of illegally avoiding more than $25 million in D.C. taxes by pretending to be a resident of other jurisdictions. MicroStrategy was accused of collaborating with Saylor to facilitate his tax evasion by misreporting his residential address to local and federal tax authorities and failing to withhold D.C. taxes. MicroStrategy said the case is "a personal tax matter involving Mr. Saylor" and called the claims against the company "false" and it would "defend aggressively against this overreach." Bitcoin purchases In August 2020, MicroStrategy invested $250 million in bitcoin as a treasury reserve asset, citing declining returns from cash, a weakening dollar and other global macroeconomic factors. The company went on to make several additional large purchases of bitcoin; as of September 19, 2022, MicroStrategy and its subsidiaries held approximately 130,000 Bitcoins, acquired at an aggregate purchase price of $3.98 billion, at an average purchase price of $30,639 per bitcoin. As of September 19, 2022, bitcoin was trading around $19,200. Saylor is the main driver behind this