Exhibit 12.1
 
 I, Raju Vegesna, Chief Executive Officer, Chairman and Managing Director of Sify Technologies
Limited, certify that:1.
    
    I have reviewed this annual report on Form 20-F of Sify Technologies Limited, herein
after referred to as the Company, for the year ended March 31, 2008.2.
    
    Based on my knowledge, this report does not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements made, in light of
the circumstances under which such statements were made, not misleading with respect to the
period covered by this report;3.
    
    Based on my knowledge, the financial statements, and other financial information
included in this report, fairly present in all material respects the financial condition,
results of operations and cash flows of the company as of, and for, the periods presented
in this report;4.
    
    The companys other certifying officer(s) and I are responsible for establishing and
maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e)
and 15d-15(e)) for the company and have:
 a)
    
    Designed such disclosure controls and procedures, or caused such disclosure
controls and procedures to be designed under our supervision, to ensure that material
information relating to the company, including its consolidated subsidiaries, is made
known to us by others within those entities, particularly during the period in which
this report is being prepared;b)
    
    Designed such internal controls over financial reporting, or caused such internal
controls over financial reporting to be designed under our supervision, to provide
reasonable assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with generally
accepted accounting principles;c)
    
    Evaluated the effectiveness of the companys disclosure controls and
procedures and presented in this report our conclusions about the effectiveness of the
disclosures and controls and procedures, as of the end of the period covered by this
report based on such evaluation; andd)
    
    Disclosed in this report any change in the companys internal control over
financial reporting that occurred during the period covered by the annual report that
has materially affected, or is reasonably likely to materially affect, the companys
internal control over financial reporting; and
 5.
    
    The companys other certifying officer(s) and I have disclosed, based on our most
recent evaluation of internal control over financial reporting, to the companys auditors
and the audit committee of the companys board of directors (or persons performing the
equivalent functions):
 a)
    
    All significant deficiencies and material weaknesses in the design or operation
of internal control over financial reporting, which are reasonably likely to adversely
affect the companys ability to record, process, summarize and report financial
information; andb)
    
    Any fraud, whether or not material, that involves management or other employees
who have a significant role in the companys internal control over financial reporting.
 Date: October 11, 2008

/s/ Raju VegesnaName:
    Raju VegesnaTitle:
    Chief Executive Officer, Chairman
and ManagingDirector
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