Document:

<PAGE>
                                                                    Exhibit 4.21

                         EXECUTIVE EMPLOYMENT AGREEMENT

This Executive Employment Agreement ("Agreement") is entered into in Chennai
India on 20th February, 2002 between:

1.    Satyam Infoway Limited ("Sify") a company incorporated in India and having
      its principal office at Tidel Park 2nd floor, 4 Canal Bank road, Taramani,
      Chennai 600 113 India and

2.    Mr. Rahul Swarup ("Executive") residing at B-305, DBS Atrium, 49,
      Kalakshetra Road, Thiruvanmiyur, Chennai -- 600 041.

The operations of Sify and its affiliates are a complex matter requiring
direction and leadership in a variety of areas including strategic planning,
financial, regulatory, community relations and others. Executive is currently
employed as Sify's President -- Enterprise Solutions. Considering the current
status of Sify's operation, Sify desires that the Executive should continue in
the employment of Sify and has requested the Executive to continue as its
President -- Enterprise Solutions and the Executive has agreed to do so subject
to the terms and conditions contained herein .

Sify and the Executive agree as follows:

1.    Sify would continue to employ the Executive as its President -- Enterprise
      Solutions. Executive agrees to continue such employment. The position is
      based in Chennai, India. This agreement shall be valid for an initial
      period of Three (3) years from 20.02.2002 till 20.02.2005.

2.    During the term of employment the Executive shall:

      a.  Observe and comply with the policies of Sify

      b.  Serve Sify faithfully, diligently and competently to the best of his
          ability.

      c.  Report to the President & COO

      d.  Serve, without further compensation, as Director of one or more of
          Sify's affiliates as desired by Sify

3.    During the term of employment the Executive shall not, without prior
      written consent of Sify's Board of Directors:

      a.  Accept any other employment with a third party

      b.  Serve on the Board of Directors or any similar body of any other
          business entity

      c.  Engage directly or indirectly in any other business activity that
          competes with the business of Sify and its affiliates. (Affiliates
          mean and include businesses in which Sify has an equity or debt stake
          in excess of 5% of the capital of such business).

4.    During the term of employment the Executive shall be entitled to following
      "compensation and benefits" (all subject to deduction of tax as per
      applicable law):

      a.  "Base salary" as set out in Annexure A which includes Salary,
          allowances, benefits and perquisites or as amended with mutual consent
          from time to time

      b.  "Performance bonus" as set out in Annexure B which is a variable pay
          linked to performance or as amended with mutual consent from time to
          time

      c.  Vacation/leave as per Sify's policy for Employees

      d.  Reimbursement of business expenses incurred on Sify's behalf as per
          Sify's policy for business expenses incurred by Employees

5.    Executive acknowledges that because of his employment, he is in a
      confidential relationship with Sify and has access to confidential
      information and trade secrets of Sify. Confidential information or trade
      secrets include all information relating to customers, business
      strategies/plans, business investments, marketing plans/techniques,
      business operation methods/practices etc. Executive agrees that such
      confidential information or trade secrets shall not be disclosed by him to
      any third party except when mandated by law and shall not be used by him
      for any purpose except in the performance of his work for Sify.

<PAGE>

6.    Executive agrees that all work of a copyrightable or patentable nature
      done in the course of work for Sify belong to Sify and undertakes to help
      in every way to get Sify's ownership of such copyrights/patents duly
      registered.

7.    This agreement terminates on the expiry of the term of this agreement
      unless both parties agree to renew it three months before the expiry of
      this agreement. This agreement may be terminated before the expiry of the
      agreement only as under and subject to the consequences provided
      hereunder:

      a.  Termination of the Agreement by the Executive for following "Good
          reasons":

          i.      Sify breaching its obligations in paying compensation

          ii.     Sify changing the location of the office of the Executive from
                  Chennai

          iii.    Within six months after Occurrence of a Change of control
                  except if joining Satyam Computer Services Limited

      b.  Termination of the Agreement by Executive without assigning any
          reason.

      c.  Termination by Sify

      d.  Death of the Executive

      The parties agree that "Change of Control" means and includes:

      a.  Change in ownership structure of Sify from that prevalent on the date
          Executive commenced services with Sify or any date thereafter whereby
          any person or group of persons or entity or group of entities acquire
          in one or more transactions (i) beneficial ownership in Sify, directly
          or indirectly, in excess of 25% of the outstanding equity shares and
          becomes the largest group owning stock/shares in Sify or (ii) ability
          to command majority voting rights in Sify's Board of Directors

      b.  Sale or divestment (including through mergers, demergers,
          consolidations, acquisitions) of a substantial part of the assets or
          business of Sify whereby the majority owners of Sify prior to such
          sale/divestment don't receive majority ownership in the acquiring
          entity.

8.    In the event of death of the Executive, termination is effective on the
      date of death. In all other instances of termination before expiry of the
      agreement, both parties agree to give a written notice to the other of
      intent to terminate the Agreement and the termination is effective three
      (3) months after the notice is received.

9.    Executive is entitled to full compensation and benefits (excluding the
      performance bonus) up to the date of termination of the Agreement.
      Executive is entitled to pro rated performance bonus up to the date of
      termination of the Agreement in the event termination notice is served by
      Executive for "Good reasons" or served by Sify within one year after
      Change of Control.

10.   Executive is entitled following additional terminal compensation of Base
      salary (as referred to in Clause 4a) in the event of termination by Sify
      for any reason or by Executive for Good Reasons:

      a.  If notice of termination is served within 1 year from the date of this
          agreement or 1 year after a change of Control, 6 months Base salary

      b.  In all other circumstances, 3 months Base salary

<PAGE>

11.   Executive has been provided by Sify a loan of Rs. 50 lakhs which is
      repayable by the Executive with interest on 31st December, 2002. In
      consideration of the Executive agreeing to continue in the employment of
      Sify as aforesaid, Sify agrees to pay the Executive an Additional
      Compensation sufficient to repay the loan (income tax to Executive's
      account) and an Additional Compensation sufficient to pay the interest
      (income tax to Sify's account), at the earliest of the following
      circumstances:

      a.  On the loan falling due for repayment

      b.  On the occurrence of a Change of Control

      c.  On the death of the Executive
          (such Additional Compensation referred above shall be reduced by the
          value as on the date of such Additional Compensation of specified
          market liquid stock options granted before 31.12.2000, vested until
          that date).

12.   This Agreement is subject to the laws of India.

13.   It is the intent of both the parties to render this agreement enforceable
      to the fullest extent permitted by law. Any clause that turns out to be
      invalid should not render the entire agreement invalid.

For Satyam Infoway Limited

Mr. R. Ramaraj                               Mr. Rahul Swarup
Managing Director & CEO                      President -- Enterprise Solutions

<PAGE>

                         EXECUTIVE EMPLOYMENT AGREEMENT

                             ANNEXURE A BASE SALARY

<TABLE>
<S>                                 <C>                     <C>
Salary:
Basic salary                        Rs. per annum           15,00,000.00
Special allowance                                           16,66,824.00
House Rent allowance                                        Company Leased

Perquisites/benefits:
Provision of Company car                                          Yes
Conveyance expenses                                            72,000.00
Driver's salary                                                42,000.00
Vehicle maintenance expenses                                   24,000.00
Medical expenses                                               15,000.00
Leave travel expenses                                        1,25,000.00
Provident fund contribution                                  1,80,000.00
Gratuity                                                       60,000.00

Total Base Salary                   Rs. per annum           36,84,825.00

                          ANNEXURE B PERFORMANCE BONUS

Bonus payable on accomplishment of
KRA/KPI                             Rs. per annum           15,00,000.00
</TABLE><PAGE>
                                                                    Exhibit 4.22

                         EXECUTIVE EMPLOYMENT AGREEMENT

This Executive Employment Agreement ("Agreement") is entered into in Chennai
India on 20th February, 2002 between:

1.    Satyam Infoway Limited ("Sify") a company incorporated in India and having
      its principal office at Tidel Park 2nd floor, 4 Canal Bank road, Taramani,
      Chennai 600 113 India and

2.    Mr. Rustom Irani ("Executive") residing at 45/II, 2nd Floor, Nandini
      Apartments, 1st Main Road, Chennai -- 600 028.

The operations of Sify and its affiliates are a complex matter requiring
direction and leadership in a variety of areas including strategic planning,
financial, regulatory, community relations and others. Executive is currently
employed as Sify's Chief Technology Officer. Considering the current status of
Sify's operation, Sify desires that the Executive should continue in the
employment of Sify and has requested the Executive to continue as its Chief
Technology Officer and the Executive has agreed to do so subject to the terms
and conditions contained herein .

Sify and the Executive agree as follows:

1.    Sify would continue to employ the Executive as its Chief Technology
      Officer. Executive agrees to continue such employment. The position is
      based in Chennai, India. This agreement shall be valid for an initial
      period of Three (3) years from 20.02.2002 till 20.02.2005.

2.    During the term of employment the Executive shall:

      a.  Observe and comply with the policies of Sify

      b.  Serve Sify faithfully, diligently and competently to the best of his
          ability.

      c.  Report to the President & COO

      d.  Serve, without further compensation, as Director of one or more of
          Sify's affiliates as desired by Sify

3.    During the term of employment the Executive shall not, without prior
      written consent of Sify's Board of Directors:

      a.  Accept any other employment with a third party

      b.  Serve on the Board of Directors or any similar body of any other
          business entity

      c.  Engage directly or indirectly in any other business activity that
          competes with the business of Sify and its affiliates. (Affiliates
          mean and include businesses in which Sify has an equity or debt stake
          in excess of 5% of the capital of such business).

4.    During the term of employment the Executive shall be entitled to following
      "compensation and benefits" (all subject to deduction of tax as per
      applicable law):

      a.  "Base salary" as set out in Annexure A which includes Salary,
          allowances, benefits and perquisites or as amended with mutual consent
          from time to time

      b.  "Performance bonus" as set out in Annexure B which is a variable pay
          linked to performance or as amended with mutual consent from time to
          time

      c.  Vacation/leave as per Sify's policy for Employees

      d.  Reimbursement of business expenses incurred on Sify's behalf as per
          Sify's policy for business expenses incurred by Employees

5.    Executive acknowledges that because of his employment, he is in a
      confidential relationship with Sify and has access to confidential
      information and trade secrets of Sify. Confidential information or trade
      secrets include all information relating to customers, business
      strategies/plans, business investments, marketing plans/techniques,
      business operation methods/practices etc. Executive agrees that such
      confidential information or trade secrets shall not be disclosed by him to
      any third party except when mandated by law and shall not be used by him
      for any purpose except in the performance of his work for Sify.

<PAGE>

6.    Executive agrees that all work of a copyrightable or patentable nature
      done in the course of work for Sify belong to Sify and undertakes to help
      in every way to get Sify's ownership of such copyrights/patents duly
      registered.

7.    This agreement terminates on the expiry of the term of this agreement
      unless both parties agree to renew it three months before the expiry of
      this agreement. This agreement may be terminated before the expiry of the
      agreement only as under and subject to the consequences provided
      hereunder:

      a.  Termination of the Agreement by the Executive for following "Good
          reasons":

          i.      Sify breaching its obligations in paying compensation

          ii.     Sify changing the location of the office of the Executive from
                  Chennai

          iii.    Within six months after Occurrence of a Change of control
                  except if joining Satyam Computer Services Limited

      b.  Termination of the Agreement by Executive without assigning any
          reason.

      c.  Termination by Sify

      d.  Death of the Executive

          The parties agree that "Change of Control" means and includes:

      a.  Change in ownership structure of Sify from that prevalent on the date
          Executive commenced services with Sify or any date thereafter whereby
          any person or group of persons or entity or group of entities acquire
          in one or more transactions (i) beneficial ownership in Sify, directly
          or indirectly, in excess of 25% of the outstanding equity shares and
          becomes the largest group owning stock/shares in Sify or (ii) ability
          to command majority voting rights in Sify's Board of Directors

      b.  Sale or divestment (including through mergers, demergers,
          consolidations, acquisitions) of a substantial part of the assets or
          business of Sify whereby the majority owners of Sify prior to such
          sale/divestment don't receive majority ownership in the acquiring
          entity.

8.    In the event of death of the Executive, termination is effective on the
      date of death. In all other instances of termination before expiry of the
      agreement, both parties agree to give a written notice to the other of
      intent to terminate the Agreement and the termination is effective three
      (3) months after the notice is received.

9.    Executive is entitled to full compensation and benefits (excluding the
      performance bonus) upto the date of termination of the Agreement.
      Executive is entitled to pro rated performance bonus upto the date of
      termination of the Agreement in the event termination notice is served by
      Executive for "Good reasons" or served by Sify within one year after
      Change of Control.

10.   Executive is entitled following additional terminal compensation of Base
      salary (as referred to in Clause 4a) in the event of termination by Sify
      for any reason or by Executive for Good Reasons:

      a.  If notice of termination is served within 1 year from the date of this
          agreement or 1 year after a change of Control, 6 months Base salary

      b.  In all other circumstances, 3 months Base salary

<PAGE>

11.   Executive has been provided by Sify a loan of Rs. 35 lakhs which is
      repayable by the Executive with interest on 31st March, 2003. In
      consideration of the Executive agreeing to continue in the employment of
      Sify as aforesaid, Sify agrees to pay the Executive an Additional
      Compensation sufficient to repay the loan (income tax to Executive's
      account) and an Additional Compensation sufficient to pay the interest
      (income tax to Sify's account), at the earliest of the following
      circumstances:

      a.  On the loan falling due for repayment

      b.  On the occurrence of a Change of Control

      c.  On the death of the Executive
          (such Additional Compensation referred above shall be reduced by the
          value as on the date of such Additional Compensation of specified
          market liquid stock options granted before 31.12.2000, vested until
          that date).

12.   This Agreement is subject to the laws of India.

13.   It is the intent of both the parties to render this agreement enforceable
      to the fullest extent permitted by law. Any clause that turns out to be
      invalid should not render the entire agreement invalid.

For Satyam Infoway Limited

Mr. R. Ramaraj                              Mr. Rustom Irani
Managing Director & CEO                     Chief Technology Officer

<PAGE>

                         EXECUTIVE EMPLOYMENT AGREEMENT

                             ANNEXURE A BASE SALARY

<TABLE>
<S>                                 <C>                      <C>
Salary:
Basic salary                        Rs. per annum            12,18,000.00
Special allowance                                             7,68,624.00
House Rent allowance                                          6,09,000.00

Perquisites/benefits:
Provision of Company car                                              Yes
Conveyance expenses                                             72,000.00
Driver's salary                                                 42,000.00
Vehicle maintenance expenses                                    24,000.00
Medical expenses                                                15,000.00
Leave travel expenses                                         1,01,500.00
Provident fund contribution                                   1,46,160.00
Gratuity                                                        48,720.00

Total Base Salary                   Rs. per annum            30,45,000.00

                          ANNEXURE B PERFORMANCE BONUS

Bonus payable on accomplishment of
KRA/KPI                             Rs. per annum            10,00,000.00
</TABLE>

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