|Type||Publicly traded aktieselskab
|Key people||Jeff Gravenhorst CEO
Heine Dalsgaard CFO
Sir Charles Allen Chairman
|Revenue||78.459 billion DKK (2013)|
|Operating income||4.315 billion DKK (2013)|
|Net income||397 million DKK (2013)|
ISS A/S (Integrated Service Solutions) is a Facility Services companies founded in Copenhagen, Denmark in 1901. ISS services include: cleaning services, support services, property services, catering services, security services and facility management services. The ISS Group’s revenue amounted to DKK 78.5 billion in 2013 and ISS now has more than 530,000 employees in over 50 countries across Europe, Asia, North America, Latin America and Pacific. More than half of ISS' employees are based in emerging markets.
1901 ISS was founded in Copenhagen, Denmark as a small security company with 20 night watchmen named Kjøbenhavn-Frederiksberg Nattevagt (Copenhagen-Frederiksberg Night Watch)
1934 ISS entered the cleaning business with the establishment of Det Danske Rengørings Selskab A/S (The Danish Cleaning Company) as an independent subsidiary of the security company
1946 The first geographical expansion outside Denmark: Swedish subsidiary established
1968 The company adopted the ISS name
1973 Overseas expansion started
1975 Group revenue reached DKK 1 billion
1977 ISS shares listed on the Copenhagen Stock Exchange
1989 The total number of employees in the Group reached 100,000
1997 Strategy “aim2002“ was launched. This strategy focused on Multi Services – selling a number of services to the same customer
1999 ISS acquired Abilis, the second largest European provider of cleaning and specialised services, in a DKK 3.6 billion acquisition, the Group’s largest ever. Abilis had about 50,000 employees and annual revenues of DKK 5.2 billion in 1998. The total number of employees in the Group reached 200,000
2000 A new five-year strategy “create2005“ was launched, introducing the Facility Services concept
2003 ISS’ first major pan-European Integrated Facility Services contract signed
2005 A new strategy was introduced aiming at a continuous transformation of ISS towards an Integrated Facility Services company. ISS A/S was acquired by funds advised by EQT Partners and Goldman Sachs Capital Partners, and de-listed from the Copenhagen Stock Exchange. The total number of employees in the Group reached 300,000
2006 Group revenue passed DKK 50 billion. ISS made the second-largest acquisition in company history, when acquiring the outstanding 51% of the shares in Tempo Services Ltd. in Australia
2007 Group revenue passed DKK 60 billion. ISS entered the US market through the acquisition of Sanitors Inc. The total number of employees in the Group reached 400,000
2008 Introduction of ISS’s strategy plan “The ISS Way”, which is built on four strategic cornerstones: customer focus, people management, the IFS strategy and a multi-local approach. ISS’s largest ever international Integrated Facility Services contract was signed
2010 Group revenue passed DKK 70 billion. The total number of employees in the Group reached 500,000 
2013 ISS is named world’s best outsourcing company as the International Association of Outsourcing Professionals ranks ISS as the #1 on its annual list of the world’s best outsourcing service providers – The Global Outsourcing 100 
2014 ISS lists on the OMX Nasdaq Copenhagen Stock Exchange in Denmark’s biggest IPO in two decades  For the second year in a row, ISS was named the world’s best outsourcing company by International Association of Outsourcing Professionals 
ISS has announced that it has sold off its Australian security business and some operations in New Zealand to Wilson Group.
Five former employees of ISS Jakarta are in police custody after allegations of a serious sexual assault on a child at Jakarta Intercultural School (JIS) where they worked as cleaners as part of an ISS team. All five had been dismissed by ISS Jakarta without pay after admitting gross misconduct and the cleaning contract at JIS has been terminated.
- Annual Report 2013
- ISS (2013). "ISS fact sheet".
-  ISS History
- G4S shares tumble on £5.2bn ISS takeover deal BBC News
- G4S abandons £5.2bn ISS takeover deal BBC News
- Teachers' and KIRKBI make EUR 500 million equity investment in ISS ISS Press Releases
- Parlina, Ina (17 April 2014). "Rape case draws high attention". The Jakarta Post. Retrieved 15 September 2015.
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