Exhibit 99.1

                     Lawson Signs New Partnership Agreement
           with Siemens Medical Solutions and Purchases Certain Assets

    ST. PAUL, Minn.--(BUSINESS WIRE)--May 3, 2004--Lawson Software
(Nasdaq:LWSN) today announced it has signed a new preferred hosting
partner agreement with Siemens Medical Solutions Health Services
Corporation, replacing the previous 10-year reseller agreement between
the two companies. As part of the agreement, Siemens becomes Lawson's
Preferred Partner for hosting Lawson software applications within the
U.S. healthcare market and Lawson becomes Siemens' Preferred ERP
vendor for healthcare.
    Lawson will become responsible for supporting more than 90 clients
who are currently using Lawson software currently supported by
Siemens. Siemens will continue to provide world-class hosting services
to its clients who outsource their Lawson applications to Siemens.
    All clients - whether hosted or installed - will receive their
Lawson application maintenance and support directly from Lawson after
a 30-day transition period. Clients will get access to Lawson's
award-winning Global Support Center for fast resolution of support
issues, direct access to Lawson software products, and direct access
to Lawson training, consulting, technical, and product experts.
    "Today's announcement is a win for our joint healthcare clients
and is a great example of Lawson's commitment to improving the client
experience," said Eric Morgan, Lawson executive vice president,
Healthcare. "For clients, the new agreement simplifies the delivery of
their maintenance, support and consulting services from a single
vendor - Lawson. As a result, we believe the agreement not only
demonstrates Lawson's commitment to healthcare organizations but also
reflects our leadership in the healthcare market and structures our
partnership with Siemens to reflect the current market environment.
During the six years of our agreement, nearly 100 healthcare clients
have chosen Lawson and Siemens. We look forward to continuing that
success and to enhancing our clients' experience."
    "Siemens innovation and technologies have made us a clear leader
in the healthcare market," said Luis Castillo, vice president, Siemens
Medical Solutions Health Services Corp. "In terms of our IT hosting
services, we've earned a Lawson ASP specific SAS70 audit, which
underscores our ability to provide superior ASP services. This new
partnership will allow two strong companies to leverage their
respective strengths - Lawson in ERP solutions and Siemens in ASP
services - toward a common vision that helps customers reduce cost and
more effectively manage resources. Lawson supplies the advanced ERP
applications and Siemens the infrastructure, and together we form a
truly optimal TCO."
    Under terms of an asset purchase agreement in conjunction with the
new partnership agreement, Lawson paid approximately $24 million for
assets acquired from Siemens. The transaction closed on April 30,
2004. The impact of this transaction to net earnings per share in
Lawson's fiscal fourth quarter ending May 31, 2004 is expected to be
immaterial. The transaction is expected to be break-even on a GAAP
basis for fiscal 2005. The effect of amortization of intangibles
consisting of customer contracts and customer lists is expected to be
approximately 2 cents per share on a full year basis for fiscal 2005,
which ends May 31, 2005. Lawson will discuss fiscal 2005 in the
company's next quarterly conference call. The preliminary date of the
company's quarterly conference call is June 24, 2004.
    Lawson serves more than 400 healthcare industry customers
representing more than 4,500 facilities, including eight of the top 10
integrated delivery networks. The company also serves managed care
systems, academic medical centers, hospitals, clinics, physician group
practices, home healthcare, long-term care and other health services
enterprises. Lawson solutions help healthcare organizations manage
their business so they can focus on their patients, automate and
streamline materials management for a better bottom line, and overcome
the challenges of labor shortages.

    About Lawson Software

    Lawson Software provides business software solutions that help
services organizations in the healthcare, retail, professional
services, public sector, financial services and other strategic
markets achieve competitive advantage. Lawson's solutions include
enterprise performance management, distribution, financials, human
resources, procurement, retail operations and service process
optimization. Headquartered in St. Paul, Minn., Lawson has offices and
affiliates serving North and South America, Europe, Asia, Africa and
Australia. Additional information about Lawson is available at
www.lawson.com.

    Forward-Looking Statements

    This press release contains forward-looking statements. These
forward-looking statements contain statements of intent, belief or
current expectations of Lawson Software, Inc., and its management.
Such forward-looking statements are not guarantees of future results
and involve risks and uncertainties that may cause actual results to
differ materially from the potential results discussed in the
forward-looking statements. The company is not obligated to update
forward-looking statements based on circumstances or events which
occur in the future. In addition to factors discussed above, risks and
uncertainties that may cause such differences include but are not
limited to: a decline in general economic conditions; uncertainties in
the software industry; global military conflicts; terrorist attacks in
the United States, and any future events in response to these
developments; changes in conditions in the company's targeted service
industries; increased competition and other risk factors listed in the
company's most recent Annual Report on Form 10-K filed with the
Securities and Exchange Commission and as included in other documents
the company files from time to time with the Commission.



    CONTACT: Lawson Software, St. Paul
             Terry Blake, 651-767-4766
             terry.blake@lawson.com
             or
             Investor Relations:
             Barbara Doyle, 651-767-4385
             barbara.doyle@lawson.com