Singapore Telecommunications Limited provides Managed Hosting Services (MHS) that are BS 7799 certified. SingTel offers MHS under the brand name of SingTel EXPAN. SingTel's data centres in Singapore and Hong Kong received their BS 7799 certification in 2002 and 2003 respectively. SingTel's data centre in Tokyo, Japan, joined the BS 7799 certified companies in Japan only recently. Companies often lack in-house expertise to build a secure computing environment. With the popularity of compliance and governance codes such as Sarbanes-Oxley and SAS 70 which place emphasis and demands on companies to adopt recommended best practices, many companies are also reviewing their corporate policies with regard to IT outsourcing or co-locating with certified service providers.