Also, it simply takes awhile to become accustomed to Web-based applications. Performance is an obvious concern for many users. You may not be able to access your applications when you need them. Ditto for when your own Internet connection is down. Our research found that users are willing to accept more downtime than I would have expected, a number of days per year.
Security is also a primary concern.
Since an ASP hosts the application, it also hosts much of your data. Most ASPs guarantee security, but some people aren't convinced, especially when their files contain sensitive financial or company information. Bryan Emerson, the founder and president of Starlight Capital, a small venture capital firm, has been using NetLedger, a Web-based accounting and financial management program, for one year. He admits he still has qualms about security. The cost and the convenience of accessing the application from any PC with a Web browser have convinced him.