Social media giant Twitter Inc announced it will introduce self-service advertisements for small- and medium-sized businesses (SMBs) in Canada, Ireland and the United Kingdom starting this week.

Virginia-based tech firm A-T Solutions acquired counterterrorism firm GreenLine Systems for an undisclosed amount to reinforce the border protection and transportation security of the US.

The LivingSocial website and mobile apps went down and have not been back up since Tuesday 2:45 pm ET, but the site said this outage was not caused by a malicious attack.

Sweden-based app maker MAG Interactive collected USD6 million in funding from Nokia Growth Partners to be used for the development and expansion of its product and facilities.

St. Louis-based agricultural data company Monsanto Co. finalized the acquisition of weather forecast and insurance firm The Climate Corp. in a deal that was valued at USD930 million.

Netherlands-based LED lighting solutions developer Ledzworld recently received USD5 million in funding to be used for the acceleration of its sales, manufacturing, and global expansion.

Berlin-based task management company 6Wunderkinder raised USD19 million in a Series B funding round to be used for the firm's expansion in the US and business development.

US-based custom apparel company CustomInk recently secured USD40 million in funding from Revolution Growth, to be used for the expansion of its facilities in Northern Virginia, Charlottesville, and Nevada.

Merz Pharma group recently bought Geneva-based aesthetics medicine specialist Antes SA for an unconfirmed amount in a transaction that would extend its product reach to North America

London-listed drugmaker Shire announced its intention to buy U.S. pharmaceutical company for USD4.2 billion.