Exhibit 99.1

Equinix Closes Additional Financing for Washington, D.C. Area Expansion


    FOSTER CITY, Calif.--(BUSINESS WIRE)--Jan. 3, 2007--Equinix, Inc.
(Nasdaq:EQIX), the leading provider of network-neutral data centers
and Internet exchange services, today announced that it has received
$40 million in additional financing for the expansion of its
Washington, D.C. area data center campus as originally outlined in an
announcement on September 18, 2006.

    Equinix is increasing the existing mortgage on its Washington,
D.C. area campus from $60 million to $100 million, on the same terms
as the initial mortgage, which is a fixed rate of 8% and a 20-year
term. Equinix intends to use the additional funding as part of its
previously announced expansion strategy for the D.C. area
(http://www.equinix.com/press/press/2006/09_18_06.html).

    Equinix is building out an existing shell on the campus and
intends to open the new Internet Business Exchange(TM) (IBX(R)) center
for customers this month. The Washington, D.C. area campus is located
in the Dulles Corridor and is home to many of the region's technology
companies. The new IBX will add approximately 100,000 gross square
feet and increase sellable cabinets by 1,700 to meet increasing demand
in the Washington, D.C. area. Separately, the company received
rezoning approval over the past summer, enabling Equinix to increase
its build out capacity on the campus by approximately 100,000 square
feet.

    "The receipt of financing for the new Washington, D.C. area IBX,
in addition to the $110 million in financing for our Chicago build,
which we expect to close in the next few weeks, will enable us to
execute on our vision and maximize flexibility in managing our
expansion plans without dilution to our shareholders," said Peter Van
Camp, CEO of Equinix. "The new Washington, D.C. area IBX will
accommodate the strong pipeline already built for this center and
solidify our position as the leading provider of colocation and
network exchange services."

    About Equinix

    Equinix is the leading global provider of network-neutral data
centers and Internet exchange services for enterprises, content
companies, systems integrators and network services providers. Through
the company's Internet Business Exchange(TM) (IBX(R)) centers in 10
markets in the U.S. and Asia, customers can directly interconnect with
every major global network and ISP for their critical peering, transit
and traffic exchange requirements. These interconnection points
facilitate the highest performance and growth of the Internet by
serving as neutral and open marketplaces for Internet infrastructure
services, allowing customers to expand their businesses while reducing
costs.

    This press release contains forward-looking statements that
involve risks and uncertainties. Actual results may differ materially
from expectations discussed in such forward-looking statements.
Factors that might cause such differences include, but are not limited
to, the challenges of acquiring, operating and constructing IBX
centers and developing, deploying and delivering Equinix services; a
failure to receive significant revenue from customers in
recently-acquired data centers; failure to complete any financing
arrangements contemplated from time to time; failure to receive the
proceeds from our loan commitments as expected; competition from
existing and new competitors; the ability to generate sufficient cash
flow or otherwise obtain funds to repay new or outstanding
indebtedness; the loss or decline in business from our key customers;
the results of any regulatory review of past stock option grants and
practices or any litigation relating to such grants and practices; and
other risks described from time to time in Equinix's filings with the
Securities and Exchange Commission. In particular, see Equinix's
recent quarterly and annual reports filed with the Securities and
Exchange Commission, copies of which are available upon request from
Equinix. Equinix does not assume any obligation to update the
forward-looking information contained in this press release.

    Equinix and IBX are registered trademarks of Equinix, Inc.
Internet Business Exchange is a trademark of Equinix, Inc.


    CONTACT: Equinix, Inc.
             Jason Starr, 650-513-7402 (Investor Relations)
             jstarr@equinix.com
             or
             K/F Communications, Inc.
             David Fonkalsrud, 415-255-6506 (Media)
             dave@kfcomm.com